Merge remote-tracking branch 'origin/develop' into sixohsix/pleroma-post_expiration

72 files changed, 1885 insertions, 808 deletions

diff --git a/lib/pleroma/web/activity_pub/activity_pub.ex b/lib/pleroma/web/activity_pub/activity_pub.ex
index a42c50875..172c952d4 100644
--- a/lib/pleroma/web/activity_pub/activity_pub.ex
+++ b/lib/pleroma/web/activity_pub/activity_pub.ex
@@ -23,6 +23,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
   import Pleroma.Web.ActivityPub.Visibility
 
   require Logger
+  require Pleroma.Constants
 
   # For Announce activities, we filter the recipients based on following status for any actors
   # that match actual users.  See issue #164 for more information about why this is necessary.
@@ -64,12 +65,12 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     if not is_nil(actor) do
       with user <- User.get_cached_by_ap_id(actor),
            false <- user.info.deactivated do
-        :ok
+        true
       else
-        _e -> :reject
+        _e -> false
       end
     else
-      :ok
+      true
     end
   end
 
@@ -118,10 +119,10 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
 
   def increase_poll_votes_if_vote(_create_data), do: :noop
 
-  def insert(map, local \\ true, fake \\ false) when is_map(map) do
+  def insert(map, local \\ true, fake \\ false, bypass_actor_check \\ false) when is_map(map) do
     with nil <- Activity.normalize(map),
          map <- lazy_put_activity_defaults(map, fake),
-         :ok <- check_actor_is_active(map["actor"]),
+         true <- bypass_actor_check || check_actor_is_active(map["actor"]),
          {_, true} <- {:remote_limit_error, check_remote_limit(map)},
          {:ok, map} <- MRF.filter(map),
          {recipients, _, _} = get_recipients(map),
@@ -207,8 +208,6 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
   def stream_out_participations(_, _), do: :noop
 
   def stream_out(activity) do
-    public = "https://www.w3.org/ns/activitystreams#Public"
-
     if activity.data["type"] in ["Create", "Announce", "Delete"] do
       object = Object.normalize(activity)
       # Do not stream out poll replies
@@ -216,7 +215,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
         Pleroma.Web.Streamer.stream("user", activity)
         Pleroma.Web.Streamer.stream("list", activity)
 
-        if Enum.member?(activity.data["to"], public) do
+        if get_visibility(activity) == "public" do
           Pleroma.Web.Streamer.stream("public", activity)
 
           if activity.local do
@@ -238,13 +237,8 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
             end
           end
         else
-          # TODO: Write test, replace with visibility test
-          if !Enum.member?(activity.data["cc"] || [], public) &&
-               !Enum.member?(
-                 activity.data["to"],
-                 User.get_cached_by_ap_id(activity.data["actor"]).follower_address
-               ),
-             do: Pleroma.Web.Streamer.stream("direct", activity)
+          if get_visibility(activity) == "direct",
+            do: Pleroma.Web.Streamer.stream("direct", activity)
         end
       end
     end
@@ -273,6 +267,9 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     else
       {:fake, true, activity} ->
         {:ok, activity}
+
+      {:error, message} ->
+        {:error, message}
     end
   end
 
@@ -391,7 +388,8 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
   def follow(follower, followed, activity_id \\ nil, local \\ true) do
     with data <- make_follow_data(follower, followed, activity_id),
          {:ok, activity} <- insert(data, local),
-         :ok <- maybe_federate(activity) do
+         :ok <- maybe_federate(activity),
+         _ <- User.set_follow_state_cache(follower.ap_id, followed.ap_id, activity.data["state"]) do
       {:ok, activity}
     end
   end
@@ -413,7 +411,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
            "actor" => ap_id,
            "object" => %{"type" => "Person", "id" => ap_id}
          },
-         {:ok, activity} <- insert(data, true, true),
+         {:ok, activity} <- insert(data, true, true, true),
          :ok <- maybe_federate(activity) do
       {:ok, user}
     end
@@ -514,13 +512,15 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
   end
 
   defp fetch_activities_for_context_query(context, opts) do
-    public = ["https://www.w3.org/ns/activitystreams#Public"]
+    public = [Pleroma.Constants.as_public()]
 
     recipients =
       if opts["user"], do: [opts["user"].ap_id | opts["user"].following] ++ public, else: public
 
     from(activity in Activity)
     |> maybe_preload_objects(opts)
+    |> maybe_preload_bookmarks(opts)
+    |> maybe_set_thread_muted_field(opts)
     |> restrict_blocked(opts)
     |> restrict_recipients(recipients, opts["user"])
     |> where(
@@ -534,6 +534,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
       )
     )
     |> exclude_poll_votes(opts)
+    |> exclude_id(opts)
     |> order_by([activity], desc: activity.id)
   end
 
@@ -555,7 +556,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
   end
 
   def fetch_public_activities(opts \\ %{}) do
-    q = fetch_activities_query(["https://www.w3.org/ns/activitystreams#Public"], opts)
+    q = fetch_activities_query([Pleroma.Constants.as_public()], opts)
 
     q
     |> restrict_unlisted()
@@ -626,6 +627,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     params =
       params
       |> Map.put("type", ["Create", "Announce"])
+      |> Map.put("user", reading_user)
       |> Map.put("actor_id", user.ap_id)
       |> Map.put("whole_db", true)
       |> Map.put("pinned_activity_ids", user.info.pinned_activities)
@@ -646,10 +648,9 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
 
   defp user_activities_recipients(%{"reading_user" => reading_user}) do
     if reading_user do
-      ["https://www.w3.org/ns/activitystreams#Public"] ++
-        [reading_user.ap_id | reading_user.following]
+      [Pleroma.Constants.as_public()] ++ [reading_user.ap_id | reading_user.following]
     else
-      ["https://www.w3.org/ns/activitystreams#Public"]
+      [Pleroma.Constants.as_public()]
     end
   end
 
@@ -753,8 +754,8 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
 
   defp restrict_favorited_by(query, %{"favorited_by" => ap_id}) do
     from(
-      activity in query,
-      where: fragment(~s(? <@ (? #> '{"object","likes"}'\)), ^ap_id, activity.data)
+      [_activity, object] in query,
+      where: fragment("(?)->'likes' \\? (?)", object.data, ^ap_id)
     )
   end
 
@@ -790,14 +791,20 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
 
   defp restrict_muted(query, %{"with_muted" => val}) when val in [true, "true", "1"], do: query
 
-  defp restrict_muted(query, %{"muting_user" => %User{info: info}}) do
+  defp restrict_muted(query, %{"muting_user" => %User{info: info}} = opts) do
     mutes = info.mutes
 
-    from(
-      activity in query,
-      where: fragment("not (? = ANY(?))", activity.actor, ^mutes),
-      where: fragment("not (?->'to' \\?| ?)", activity.data, ^mutes)
-    )
+    query =
+      from([activity] in query,
+        where: fragment("not (? = ANY(?))", activity.actor, ^mutes),
+        where: fragment("not (?->'to' \\?| ?)", activity.data, ^mutes)
+      )
+
+    unless opts["skip_preload"] do
+      from([thread_mute: tm] in query, where: is_nil(tm))
+    else
+      query
+    end
   end
 
   defp restrict_muted(query, _), do: query
@@ -834,7 +841,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
         fragment(
           "not (coalesce(?->'cc', '{}'::jsonb) \\?| ?)",
           activity.data,
-          ^["https://www.w3.org/ns/activitystreams#Public"]
+          ^[Pleroma.Constants.as_public()]
         )
     )
   end
@@ -874,6 +881,12 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     end
   end
 
+  defp exclude_id(query, %{"exclude_id" => id}) when is_binary(id) do
+    from(activity in query, where: activity.id != ^id)
+  end
+
+  defp exclude_id(query, _), do: query
+
   defp maybe_preload_objects(query, %{"skip_preload" => true}), do: query
 
   defp maybe_preload_objects(query, _) do
@@ -892,7 +905,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
 
   defp maybe_set_thread_muted_field(query, opts) do
     query
-    |> Activity.with_set_thread_muted_field(opts["user"])
+    |> Activity.with_set_thread_muted_field(opts["muting_user"] || opts["user"])
   end
 
   defp maybe_order(query, %{order: :desc}) do
@@ -971,7 +984,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
       where:
         fragment("? && ?", activity.recipients, ^recipients) or
           (fragment("? && ?", activity.recipients, ^recipients_with_public) and
-             "https://www.w3.org/ns/activitystreams#Public" in activity.recipients)
+             ^Pleroma.Constants.as_public() in activity.recipients)
     )
   end
 
@@ -1010,16 +1023,23 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
           "url" => [%{"href" => data["image"]["url"]}]
         }
 
+    fields =
+      data
+      |> Map.get("attachment", [])
+      |> Enum.filter(fn %{"type" => t} -> t == "PropertyValue" end)
+      |> Enum.map(fn fields -> Map.take(fields, ["name", "value"]) end)
+
     locked = data["manuallyApprovesFollowers"] || false
     data = Transmogrifier.maybe_fix_user_object(data)
 
     user_data = %{
       ap_id: data["id"],
       info: %{
-        "ap_enabled" => true,
-        "source_data" => data,
-        "banner" => banner,
-        "locked" => locked
+        ap_enabled: true,
+        source_data: data,
+        banner: banner,
+        fields: fields,
+        locked: locked
       },
       avatar: avatar,
       name: data["name"],
@@ -1043,6 +1063,71 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     {:ok, user_data}
   end
 
+  def fetch_follow_information_for_user(user) do
+    with {:ok, following_data} <-
+           Fetcher.fetch_and_contain_remote_object_from_id(user.following_address),
+         following_count when is_integer(following_count) <- following_data["totalItems"],
+         {:ok, hide_follows} <- collection_private(following_data),
+         {:ok, followers_data} <-
+           Fetcher.fetch_and_contain_remote_object_from_id(user.follower_address),
+         followers_count when is_integer(followers_count) <- followers_data["totalItems"],
+         {:ok, hide_followers} <- collection_private(followers_data) do
+      {:ok,
+       %{
+         hide_follows: hide_follows,
+         follower_count: followers_count,
+         following_count: following_count,
+         hide_followers: hide_followers
+       }}
+    else
+      {:error, _} = e ->
+        e
+
+      e ->
+        {:error, e}
+    end
+  end
+
+  defp maybe_update_follow_information(data) do
+    with {:enabled, true} <-
+           {:enabled, Pleroma.Config.get([:instance, :external_user_synchronization])},
+         {:ok, info} <- fetch_follow_information_for_user(data) do
+      info = Map.merge(data.info, info)
+      Map.put(data, :info, info)
+    else
+      {:enabled, false} ->
+        data
+
+      e ->
+        Logger.error(
+          "Follower/Following counter update for #{data.ap_id} failed.\n" <> inspect(e)
+        )
+
+        data
+    end
+  end
+
+  defp collection_private(data) do
+    if is_map(data["first"]) and
+         data["first"]["type"] in ["CollectionPage", "OrderedCollectionPage"] do
+      {:ok, false}
+    else
+      with {:ok, %{"type" => type}} when type in ["CollectionPage", "OrderedCollectionPage"] <-
+             Fetcher.fetch_and_contain_remote_object_from_id(data["first"]) do
+        {:ok, false}
+      else
+        {:error, {:ok, %{status: code}}} when code in [401, 403] ->
+          {:ok, true}
+
+        {:error, _} = e ->
+          e
+
+        e ->
+          {:error, e}
+      end
+    end
+  end
+
   def user_data_from_user_object(data) do
     with {:ok, data} <- MRF.filter(data),
          {:ok, data} <- object_to_user_data(data) do
@@ -1054,7 +1139,8 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
 
   def fetch_and_prepare_user_from_ap_id(ap_id) do
     with {:ok, data} <- Fetcher.fetch_and_contain_remote_object_from_id(ap_id),
-         {:ok, data} <- user_data_from_user_object(data) do
+         {:ok, data} <- user_data_from_user_object(data),
+         data <- maybe_update_follow_information(data) do
       {:ok, data}
     else
       e -> Logger.error("Could not decode user at fetch #{ap_id}, #{inspect(e)}")
diff --git a/lib/pleroma/web/activity_pub/mrf.ex b/lib/pleroma/web/activity_pub/mrf.ex
index dd204b21c..263ed11af 100644
--- a/lib/pleroma/web/activity_pub/mrf.ex
+++ b/lib/pleroma/web/activity_pub/mrf.ex
@@ -28,11 +28,43 @@ defmodule Pleroma.Web.ActivityPub.MRF do
 
   @spec subdomains_regex([String.t()]) :: [Regex.t()]
   def subdomains_regex(domains) when is_list(domains) do
-    for domain <- domains, do: ~r(^#{String.replace(domain, "*.", "(.*\\.)*")}$)
+    for domain <- domains, do: ~r(^#{String.replace(domain, "*.", "(.*\\.)*")}$)i
   end
 
   @spec subdomain_match?([Regex.t()], String.t()) :: boolean()
   def subdomain_match?(domains, host) do
     Enum.any?(domains, fn domain -> Regex.match?(domain, host) end)
   end
+
+  @callback describe() :: {:ok | :error, Map.t()}
+
+  def describe(policies) do
+    {:ok, policy_configs} =
+      policies
+      |> Enum.reduce({:ok, %{}}, fn
+        policy, {:ok, data} ->
+          {:ok, policy_data} = policy.describe()
+          {:ok, Map.merge(data, policy_data)}
+
+        _, error ->
+          error
+      end)
+
+    mrf_policies =
+      get_policies()
+      |> Enum.map(fn policy -> to_string(policy) |> String.split(".") |> List.last() end)
+
+    exclusions = Pleroma.Config.get([:instance, :mrf_transparency_exclusions])
+
+    base =
+      %{
+        mrf_policies: mrf_policies,
+        exclusions: length(exclusions) > 0
+      }
+      |> Map.merge(policy_configs)
+
+    {:ok, base}
+  end
+
+  def describe, do: get_policies() |> describe()
 end
diff --git a/lib/pleroma/web/activity_pub/mrf/anti_followbot_policy.ex b/lib/pleroma/web/activity_pub/mrf/anti_followbot_policy.ex
index 87fa514c3..de1eb4aa5 100644
--- a/lib/pleroma/web/activity_pub/mrf/anti_followbot_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/anti_followbot_policy.ex
@@ -62,4 +62,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.AntiFollowbotPolicy do
 
   @impl true
   def filter(message), do: {:ok, message}
+
+  @impl true
+  def describe, do: {:ok, %{}}
 end
diff --git a/lib/pleroma/web/activity_pub/mrf/anti_link_spam_policy.ex b/lib/pleroma/web/activity_pub/mrf/anti_link_spam_policy.ex
index 2da3eac2f..b90193ca0 100644
--- a/lib/pleroma/web/activity_pub/mrf/anti_link_spam_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/anti_link_spam_policy.ex
@@ -5,6 +5,8 @@
 defmodule Pleroma.Web.ActivityPub.MRF.AntiLinkSpamPolicy do
   alias Pleroma.User
 
+  @behaviour Pleroma.Web.ActivityPub.MRF
+
   require Logger
 
   # has the user successfully posted before?
@@ -22,6 +24,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.AntiLinkSpamPolicy do
 
   defp contains_links?(_), do: false
 
+  @impl true
   def filter(%{"type" => "Create", "actor" => actor, "object" => object} = message) do
     with {:ok, %User{} = u} <- User.get_or_fetch_by_ap_id(actor),
          {:contains_links, true} <- {:contains_links, contains_links?(object)},
@@ -45,4 +48,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.AntiLinkSpamPolicy do
 
   # in all other cases, pass through
   def filter(message), do: {:ok, message}
+
+  @impl true
+  def describe, do: {:ok, %{}}
 end
diff --git a/lib/pleroma/web/activity_pub/mrf/drop_policy.ex b/lib/pleroma/web/activity_pub/mrf/drop_policy.ex
index b8d38aae6..f7831bc3e 100644
--- a/lib/pleroma/web/activity_pub/mrf/drop_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/drop_policy.ex
@@ -12,4 +12,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.DropPolicy do
     Logger.info("REJECTING #{inspect(object)}")
     {:reject, object}
   end
+
+  @impl true
+  def describe, do: {:ok, %{}}
 end
diff --git a/lib/pleroma/web/activity_pub/mrf/ensure_re_prepended.ex b/lib/pleroma/web/activity_pub/mrf/ensure_re_prepended.ex
index 2d03df68a..3a3e72910 100644
--- a/lib/pleroma/web/activity_pub/mrf/ensure_re_prepended.ex
+++ b/lib/pleroma/web/activity_pub/mrf/ensure_re_prepended.ex
@@ -39,4 +39,6 @@ defmodule Pleroma.Web.ActivityPub.MRF.EnsureRePrepended do
   end
 
   def filter(object), do: {:ok, object}
+
+  def describe, do: {:ok, %{}}
 end
diff --git a/lib/pleroma/web/activity_pub/mrf/hellthread_policy.ex b/lib/pleroma/web/activity_pub/mrf/hellthread_policy.ex
index a699f6a7e..b3c742954 100644
--- a/lib/pleroma/web/activity_pub/mrf/hellthread_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/hellthread_policy.ex
@@ -4,6 +4,9 @@
 
 defmodule Pleroma.Web.ActivityPub.MRF.HellthreadPolicy do
   alias Pleroma.User
+
+  require Pleroma.Constants
+
   @moduledoc "Block messages with too much mentions (configurable)"
 
   @behaviour Pleroma.Web.ActivityPub.MRF
@@ -19,12 +22,12 @@ defmodule Pleroma.Web.ActivityPub.MRF.HellthreadPolicy do
         when follower_collection? and recipients > threshold ->
           message
           |> Map.put("to", [follower_collection])
-          |> Map.put("cc", ["https://www.w3.org/ns/activitystreams#Public"])
+          |> Map.put("cc", [Pleroma.Constants.as_public()])
 
         {:public, recipients} when recipients > threshold ->
           message
           |> Map.put("to", [])
-          |> Map.put("cc", ["https://www.w3.org/ns/activitystreams#Public"])
+          |> Map.put("cc", [Pleroma.Constants.as_public()])
 
         _ ->
           message
@@ -51,10 +54,10 @@ defmodule Pleroma.Web.ActivityPub.MRF.HellthreadPolicy do
     recipients = (message["to"] || []) ++ (message["cc"] || [])
     follower_collection = User.get_cached_by_ap_id(message["actor"]).follower_address
 
-    if Enum.member?(recipients, "https://www.w3.org/ns/activitystreams#Public") do
+    if Enum.member?(recipients, Pleroma.Constants.as_public()) do
       recipients =
         recipients
-        |> List.delete("https://www.w3.org/ns/activitystreams#Public")
+        |> List.delete(Pleroma.Constants.as_public())
         |> List.delete(follower_collection)
 
       {:public, length(recipients)}
@@ -87,4 +90,8 @@ defmodule Pleroma.Web.ActivityPub.MRF.HellthreadPolicy do
 
   @impl true
   def filter(message), do: {:ok, message}
+
+  @impl true
+  def describe,
+    do: {:ok, %{mrf_hellthread: Pleroma.Config.get(:mrf_hellthread) |> Enum.into(%{})}}
 end
diff --git a/lib/pleroma/web/activity_pub/mrf/keyword_policy.ex b/lib/pleroma/web/activity_pub/mrf/keyword_policy.ex
index d5c341433..d6d1396bc 100644
--- a/lib/pleroma/web/activity_pub/mrf/keyword_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/keyword_policy.ex
@@ -3,6 +3,8 @@
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.ActivityPub.MRF.KeywordPolicy do
+  require Pleroma.Constants
+
   @moduledoc "Reject or Word-Replace messages with a keyword or regex"
 
   @behaviour Pleroma.Web.ActivityPub.MRF
@@ -31,12 +33,12 @@ defmodule Pleroma.Web.ActivityPub.MRF.KeywordPolicy do
   defp check_ftl_removal(
          %{"to" => to, "object" => %{"content" => content, "summary" => summary}} = message
        ) do
-    if "https://www.w3.org/ns/activitystreams#Public" in to and
+    if Pleroma.Constants.as_public() in to and
          Enum.any?(Pleroma.Config.get([:mrf_keyword, :federated_timeline_removal]), fn pattern ->
            string_matches?(content, pattern) or string_matches?(summary, pattern)
          end) do
-      to = List.delete(to, "https://www.w3.org/ns/activitystreams#Public")
-      cc = ["https://www.w3.org/ns/activitystreams#Public" | message["cc"] || []]
+      to = List.delete(to, Pleroma.Constants.as_public())
+      cc = [Pleroma.Constants.as_public() | message["cc"] || []]
 
       message =
         message
@@ -94,4 +96,36 @@ defmodule Pleroma.Web.ActivityPub.MRF.KeywordPolicy do
 
   @impl true
   def filter(message), do: {:ok, message}
+
+  @impl true
+  def describe do
+    # This horror is needed to convert regex sigils to strings
+    mrf_keyword =
+      Pleroma.Config.get(:mrf_keyword, [])
+      |> Enum.map(fn {key, value} ->
+        {key,
+         Enum.map(value, fn
+           {pattern, replacement} ->
+             %{
+               "pattern" =>
+                 if not is_binary(pattern) do
+                   inspect(pattern)
+                 else
+                   pattern
+                 end,
+               "replacement" => replacement
+             }
+
+           pattern ->
+             if not is_binary(pattern) do
+               inspect(pattern)
+             else
+               pattern
+             end
+         end)}
+      end)
+      |> Enum.into(%{})
+
+    {:ok, %{mrf_keyword: mrf_keyword}}
+  end
 end
diff --git a/lib/pleroma/web/activity_pub/mrf/mediaproxy_warming_policy.ex b/lib/pleroma/web/activity_pub/mrf/mediaproxy_warming_policy.ex
index 01d21a299..a179dd54d 100644
--- a/lib/pleroma/web/activity_pub/mrf/mediaproxy_warming_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/mediaproxy_warming_policy.ex
@@ -53,4 +53,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.MediaProxyWarmingPolicy do
 
   @impl true
   def filter(message), do: {:ok, message}
+
+  @impl true
+  def describe, do: {:ok, %{}}
 end
diff --git a/lib/pleroma/web/activity_pub/mrf/mention_policy.ex b/lib/pleroma/web/activity_pub/mrf/mention_policy.ex
index 1842e1aeb..ce8bc4580 100644
--- a/lib/pleroma/web/activity_pub/mrf/mention_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/mention_policy.ex
@@ -21,4 +21,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.MentionPolicy do
 
   @impl true
   def filter(message), do: {:ok, message}
+
+  @impl true
+  def describe, do: {:ok, %{}}
 end
diff --git a/lib/pleroma/web/activity_pub/mrf/no_placeholder_text_policy.ex b/lib/pleroma/web/activity_pub/mrf/no_placeholder_text_policy.ex
index 86a48bda5..f67f48ab6 100644
--- a/lib/pleroma/web/activity_pub/mrf/no_placeholder_text_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/no_placeholder_text_policy.ex
@@ -19,4 +19,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.NoPlaceholderTextPolicy do
 
   @impl true
   def filter(object), do: {:ok, object}
+
+  @impl true
+  def describe, do: {:ok, %{}}
 end
diff --git a/lib/pleroma/web/activity_pub/mrf/noop_policy.ex b/lib/pleroma/web/activity_pub/mrf/noop_policy.ex
index c47cb3298..878c57925 100644
--- a/lib/pleroma/web/activity_pub/mrf/noop_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/noop_policy.ex
@@ -10,4 +10,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.NoOpPolicy do
   def filter(object) do
     {:ok, object}
   end
+
+  @impl true
+  def describe, do: {:ok, %{}}
 end
diff --git a/lib/pleroma/web/activity_pub/mrf/normalize_markup.ex b/lib/pleroma/web/activity_pub/mrf/normalize_markup.ex
index c269d0f89..daa4c88ad 100644
--- a/lib/pleroma/web/activity_pub/mrf/normalize_markup.ex
+++ b/lib/pleroma/web/activity_pub/mrf/normalize_markup.ex
@@ -21,4 +21,6 @@ defmodule Pleroma.Web.ActivityPub.MRF.NormalizeMarkup do
   end
 
   def filter(object), do: {:ok, object}
+
+  def describe, do: {:ok, %{}}
 end
diff --git a/lib/pleroma/web/activity_pub/mrf/reject_non_public.ex b/lib/pleroma/web/activity_pub/mrf/reject_non_public.ex
index da13fd7c7..5a809a321 100644
--- a/lib/pleroma/web/activity_pub/mrf/reject_non_public.ex
+++ b/lib/pleroma/web/activity_pub/mrf/reject_non_public.ex
@@ -10,7 +10,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.RejectNonPublic do
 
   @behaviour Pleroma.Web.ActivityPub.MRF
 
-  @public "https://www.w3.org/ns/activitystreams#Public"
+  require Pleroma.Constants
 
   @impl true
   def filter(%{"type" => "Create"} = object) do
@@ -19,8 +19,8 @@ defmodule Pleroma.Web.ActivityPub.MRF.RejectNonPublic do
     # Determine visibility
     visibility =
       cond do
-        @public in object["to"] -> "public"
-        @public in object["cc"] -> "unlisted"
+        Pleroma.Constants.as_public() in object["to"] -> "public"
+        Pleroma.Constants.as_public() in object["cc"] -> "unlisted"
         user.follower_address in object["to"] -> "followers"
         true -> "direct"
       end
@@ -44,4 +44,8 @@ defmodule Pleroma.Web.ActivityPub.MRF.RejectNonPublic do
 
   @impl true
   def filter(object), do: {:ok, object}
+
+  @impl true
+  def describe,
+    do: {:ok, %{mrf_rejectnonpublic: Pleroma.Config.get(:mrf_rejectnonpublic) |> Enum.into(%{})}}
 end
diff --git a/lib/pleroma/web/activity_pub/mrf/simple_policy.ex b/lib/pleroma/web/activity_pub/mrf/simple_policy.ex
index 2cf63d3db..8aa6852f0 100644
--- a/lib/pleroma/web/activity_pub/mrf/simple_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/simple_policy.ex
@@ -8,6 +8,8 @@ defmodule Pleroma.Web.ActivityPub.MRF.SimplePolicy do
   @moduledoc "Filter activities depending on their origin instance"
   @behaviour MRF
 
+  require Pleroma.Constants
+
   defp check_accept(%{host: actor_host} = _actor_info, object) do
     accepts =
       Pleroma.Config.get([:mrf_simple, :accept])
@@ -89,14 +91,10 @@ defmodule Pleroma.Web.ActivityPub.MRF.SimplePolicy do
     object =
       with true <- MRF.subdomain_match?(timeline_removal, actor_host),
            user <- User.get_cached_by_ap_id(object["actor"]),
-           true <- "https://www.w3.org/ns/activitystreams#Public" in object["to"] do
-        to =
-          List.delete(object["to"], "https://www.w3.org/ns/activitystreams#Public") ++
-            [user.follower_address]
+           true <- Pleroma.Constants.as_public() in object["to"] do
+        to = List.delete(object["to"], Pleroma.Constants.as_public()) ++ [user.follower_address]
 
-        cc =
-          List.delete(object["cc"], user.follower_address) ++
-            ["https://www.w3.org/ns/activitystreams#Public"]
+        cc = List.delete(object["cc"], user.follower_address) ++ [Pleroma.Constants.as_public()]
 
         object
         |> Map.put("to", to)
@@ -179,4 +177,16 @@ defmodule Pleroma.Web.ActivityPub.MRF.SimplePolicy do
   end
 
   def filter(object), do: {:ok, object}
+
+  @impl true
+  def describe do
+    exclusions = Pleroma.Config.get([:instance, :mrf_transparency_exclusions])
+
+    mrf_simple =
+      Pleroma.Config.get(:mrf_simple)
+      |> Enum.map(fn {k, v} -> {k, Enum.reject(v, fn v -> v in exclusions end)} end)
+      |> Enum.into(%{})
+
+    {:ok, %{mrf_simple: mrf_simple}}
+  end
 end
diff --git a/lib/pleroma/web/activity_pub/mrf/subchain_policy.ex b/lib/pleroma/web/activity_pub/mrf/subchain_policy.ex
index 765704389..566c1e191 100644
--- a/lib/pleroma/web/activity_pub/mrf/subchain_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/subchain_policy.ex
@@ -37,4 +37,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.SubchainPolicy do
 
   @impl true
   def filter(message), do: {:ok, message}
+
+  @impl true
+  def describe, do: {:ok, %{}}
 end
diff --git a/lib/pleroma/web/activity_pub/mrf/tag_policy.ex b/lib/pleroma/web/activity_pub/mrf/tag_policy.ex
index b42c4ed76..c1801d2ec 100644
--- a/lib/pleroma/web/activity_pub/mrf/tag_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/tag_policy.ex
@@ -19,7 +19,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.TagPolicy do
      - `mrf_tag:disable-any-subscription`: Reject any follow requests
   """
 
-  @public "https://www.w3.org/ns/activitystreams#Public"
+  require Pleroma.Constants
 
   defp get_tags(%User{tags: tags}) when is_list(tags), do: tags
   defp get_tags(_), do: []
@@ -70,9 +70,9 @@ defmodule Pleroma.Web.ActivityPub.MRF.TagPolicy do
        ) do
     user = User.get_cached_by_ap_id(actor)
 
-    if Enum.member?(to, @public) do
-      to = List.delete(to, @public) ++ [user.follower_address]
-      cc = List.delete(cc, user.follower_address) ++ [@public]
+    if Enum.member?(to, Pleroma.Constants.as_public()) do
+      to = List.delete(to, Pleroma.Constants.as_public()) ++ [user.follower_address]
+      cc = List.delete(cc, user.follower_address) ++ [Pleroma.Constants.as_public()]
 
       object =
         object
@@ -103,9 +103,10 @@ defmodule Pleroma.Web.ActivityPub.MRF.TagPolicy do
        ) do
     user = User.get_cached_by_ap_id(actor)
 
-    if Enum.member?(to, @public) or Enum.member?(cc, @public) do
-      to = List.delete(to, @public) ++ [user.follower_address]
-      cc = List.delete(cc, @public)
+    if Enum.member?(to, Pleroma.Constants.as_public()) or
+         Enum.member?(cc, Pleroma.Constants.as_public()) do
+      to = List.delete(to, Pleroma.Constants.as_public()) ++ [user.follower_address]
+      cc = List.delete(cc, Pleroma.Constants.as_public())
 
       object =
         object
@@ -164,4 +165,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.TagPolicy do
 
   @impl true
   def filter(message), do: {:ok, message}
+
+  @impl true
+  def describe, do: {:ok, %{}}
 end
diff --git a/lib/pleroma/web/activity_pub/mrf/user_allowlist_policy.ex b/lib/pleroma/web/activity_pub/mrf/user_allowlist_policy.ex
index e35d2c422..7389d6a96 100644
--- a/lib/pleroma/web/activity_pub/mrf/user_allowlist_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/user_allowlist_policy.ex
@@ -32,4 +32,13 @@ defmodule Pleroma.Web.ActivityPub.MRF.UserAllowListPolicy do
   end
 
   def filter(object), do: {:ok, object}
+
+  @impl true
+  def describe do
+    mrf_user_allowlist =
+      Config.get([:mrf_user_allowlist], [])
+      |> Enum.into(%{}, fn {k, v} -> {k, length(v)} end)
+
+    {:ok, %{mrf_user_allowlist: mrf_user_allowlist}}
+  end
 end
diff --git a/lib/pleroma/web/activity_pub/mrf/vocabulary_policy.ex b/lib/pleroma/web/activity_pub/mrf/vocabulary_policy.ex
new file mode 100644
index 000000000..4eaea00d8
--- /dev/null
+++ b/lib/pleroma/web/activity_pub/mrf/vocabulary_policy.ex
@@ -0,0 +1,37 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Web.ActivityPub.MRF.VocabularyPolicy do
+  @moduledoc "Filter messages which belong to certain activity vocabularies"
+
+  @behaviour Pleroma.Web.ActivityPub.MRF
+
+  def filter(%{"type" => "Undo", "object" => child_message} = message) do
+    with {:ok, _} <- filter(child_message) do
+      {:ok, message}
+    else
+      {:reject, nil} ->
+        {:reject, nil}
+    end
+  end
+
+  def filter(%{"type" => message_type} = message) do
+    with accepted_vocabulary <- Pleroma.Config.get([:mrf_vocabulary, :accept]),
+         rejected_vocabulary <- Pleroma.Config.get([:mrf_vocabulary, :reject]),
+         true <-
+           length(accepted_vocabulary) == 0 || Enum.member?(accepted_vocabulary, message_type),
+         false <-
+           length(rejected_vocabulary) > 0 && Enum.member?(rejected_vocabulary, message_type),
+         {:ok, _} <- filter(message["object"]) do
+      {:ok, message}
+    else
+      _ -> {:reject, nil}
+    end
+  end
+
+  def filter(message), do: {:ok, message}
+
+  def describe,
+    do: {:ok, %{mrf_vocabulary: Pleroma.Config.get(:mrf_vocabulary) |> Enum.into(%{})}}
+end
diff --git a/lib/pleroma/web/activity_pub/publisher.ex b/lib/pleroma/web/activity_pub/publisher.ex
index 016d78216..262529b84 100644
--- a/lib/pleroma/web/activity_pub/publisher.ex
+++ b/lib/pleroma/web/activity_pub/publisher.ex
@@ -11,6 +11,8 @@ defmodule Pleroma.Web.ActivityPub.Publisher do
   alias Pleroma.Web.ActivityPub.Relay
   alias Pleroma.Web.ActivityPub.Transmogrifier
 
+  require Pleroma.Constants
+
   import Pleroma.Web.ActivityPub.Visibility
 
   @behaviour Pleroma.Web.Federator.Publisher
@@ -44,7 +46,7 @@ defmodule Pleroma.Web.ActivityPub.Publisher do
   """
   def publish_one(%{inbox: inbox, json: json, actor: %User{} = actor, id: id} = params) do
     Logger.info("Federating #{id} to #{inbox}")
-    host = URI.parse(inbox).host
+    %{host: host, path: path} = URI.parse(inbox)
 
     digest = "SHA-256=" <> (:crypto.hash(:sha256, json) |> Base.encode64())
 
@@ -54,6 +56,7 @@ defmodule Pleroma.Web.ActivityPub.Publisher do
 
     signature =
       Pleroma.Signature.sign(actor, %{
+        "(request-target)": "post #{path}",
         host: host,
         "content-length": byte_size(json),
         digest: digest,
@@ -117,8 +120,6 @@ defmodule Pleroma.Web.ActivityPub.Publisher do
     |> Enum.map(& &1.ap_id)
   end
 
-  @as_public "https://www.w3.org/ns/activitystreams#Public"
-
   defp maybe_use_sharedinbox(%User{info: %{source_data: data}}),
     do: (is_map(data["endpoints"]) && Map.get(data["endpoints"], "sharedInbox")) || data["inbox"]
 
@@ -145,7 +146,7 @@ defmodule Pleroma.Web.ActivityPub.Publisher do
       type == "Delete" ->
         maybe_use_sharedinbox(user)
 
-      @as_public in to || @as_public in cc ->
+      Pleroma.Constants.as_public() in to || Pleroma.Constants.as_public() in cc ->
         maybe_use_sharedinbox(user)
 
       length(to) + length(cc) > 1 ->
diff --git a/lib/pleroma/web/activity_pub/relay.ex b/lib/pleroma/web/activity_pub/relay.ex
index 1ebfcdd86..5f18cc64a 100644
--- a/lib/pleroma/web/activity_pub/relay.ex
+++ b/lib/pleroma/web/activity_pub/relay.ex
@@ -14,6 +14,7 @@ defmodule Pleroma.Web.ActivityPub.Relay do
     |> User.get_or_create_service_actor_by_ap_id()
   end
 
+  @spec follow(String.t()) :: {:ok, Activity.t()} | {:error, any()}
   def follow(target_instance) do
     with %User{} = local_user <- get_actor(),
          {:ok, %User{} = target_user} <- User.get_or_fetch_by_ap_id(target_instance),
@@ -21,12 +22,17 @@ defmodule Pleroma.Web.ActivityPub.Relay do
       Logger.info("relay: followed instance: #{target_instance}; id=#{activity.data["id"]}")
       {:ok, activity}
     else
+      {:error, _} = error ->
+        Logger.error("error: #{inspect(error)}")
+        error
+
       e ->
         Logger.error("error: #{inspect(e)}")
         {:error, e}
     end
   end
 
+  @spec unfollow(String.t()) :: {:ok, Activity.t()} | {:error, any()}
   def unfollow(target_instance) do
     with %User{} = local_user <- get_actor(),
          {:ok, %User{} = target_user} <- User.get_or_fetch_by_ap_id(target_instance),
@@ -34,20 +40,27 @@ defmodule Pleroma.Web.ActivityPub.Relay do
       Logger.info("relay: unfollowed instance: #{target_instance}: id=#{activity.data["id"]}")
       {:ok, activity}
     else
+      {:error, _} = error ->
+        Logger.error("error: #{inspect(error)}")
+        error
+
       e ->
         Logger.error("error: #{inspect(e)}")
         {:error, e}
     end
   end
 
+  @spec publish(any()) :: {:ok, Activity.t(), Object.t()} | {:error, any()}
   def publish(%Activity{data: %{"type" => "Create"}} = activity) do
     with %User{} = user <- get_actor(),
          %Object{} = object <- Object.normalize(activity) do
       ActivityPub.announce(user, object, nil, true, false)
     else
-      e -> Logger.error("error: #{inspect(e)}")
+      e ->
+        Logger.error("error: #{inspect(e)}")
+        {:error, inspect(e)}
     end
   end
 
-  def publish(_), do: nil
+  def publish(_), do: {:error, "Not implemented"}
 end
diff --git a/lib/pleroma/web/activity_pub/transmogrifier.ex b/lib/pleroma/web/activity_pub/transmogrifier.ex
index 602ae48e1..36340a3a1 100644
--- a/lib/pleroma/web/activity_pub/transmogrifier.ex
+++ b/lib/pleroma/web/activity_pub/transmogrifier.ex
@@ -19,12 +19,14 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
   import Ecto.Query
 
   require Logger
+  require Pleroma.Constants
 
   @doc """
   Modifies an incoming AP object (mastodon format) to our internal format.
   """
   def fix_object(object, options \\ []) do
     object
+    |> strip_internal_fields
     |> fix_actor
     |> fix_url
     |> fix_attachments
@@ -33,7 +35,6 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
     |> fix_emoji
     |> fix_tag
     |> fix_content_map
-    |> fix_likes
     |> fix_addressing
     |> fix_summary
     |> fix_type(options)
@@ -102,8 +103,7 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
 
     follower_collection = User.get_cached_by_ap_id(Containment.get_actor(object)).follower_address
 
-    explicit_mentions =
-      explicit_mentions ++ ["https://www.w3.org/ns/activitystreams#Public", follower_collection]
+    explicit_mentions = explicit_mentions ++ [Pleroma.Constants.as_public(), follower_collection]
 
     fix_explicit_addressing(object, explicit_mentions, follower_collection)
   end
@@ -115,11 +115,11 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
 
     if followers_collection not in recipients do
       cond do
-        "https://www.w3.org/ns/activitystreams#Public" in cc ->
+        Pleroma.Constants.as_public() in cc ->
           to = to ++ [followers_collection]
           Map.put(object, "to", to)
 
-        "https://www.w3.org/ns/activitystreams#Public" in to ->
+        Pleroma.Constants.as_public() in to ->
           cc = cc ++ [followers_collection]
           Map.put(object, "cc", cc)
 
@@ -151,20 +151,6 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
     |> Map.put("actor", Containment.get_actor(%{"actor" => actor}))
   end
 
-  # Check for standardisation
-  # This is what Peertube does
-  # curl -H 'Accept: application/activity+json' $likes | jq .totalItems
-  # Prismo returns only an integer (count) as "likes"
-  def fix_likes(%{"likes" => likes} = object) when not is_map(likes) do
-    object
-    |> Map.put("likes", [])
-    |> Map.put("like_count", 0)
-  end
-
-  def fix_likes(object) do
-    object
-  end
-
   def fix_in_reply_to(object, options \\ [])
 
   def fix_in_reply_to(%{"inReplyTo" => in_reply_to} = object, options)
@@ -347,13 +333,15 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
 
   def fix_type(object, options \\ [])
 
-  def fix_type(%{"inReplyTo" => reply_id} = object, options) when is_binary(reply_id) do
+  def fix_type(%{"inReplyTo" => reply_id, "name" => _} = object, options)
+      when is_binary(reply_id) do
     reply =
-      if Federator.allowed_incoming_reply_depth?(options[:depth]) do
-        Object.normalize(reply_id, true)
+      with true <- Federator.allowed_incoming_reply_depth?(options[:depth]),
+           {:ok, object} <- get_obj_helper(reply_id, options) do
+        object
       end
 
-    if reply && (reply.data["type"] == "Question" and object["name"]) do
+    if reply && reply.data["type"] == "Question" do
       Map.put(object, "type", "Answer")
     else
       object
@@ -480,8 +468,7 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
          {:ok, %User{} = follower} <- User.get_or_fetch_by_ap_id(follower),
          {:ok, activity} <- ActivityPub.follow(follower, followed, id, false) do
       with deny_follow_blocked <- Pleroma.Config.get([:user, :deny_follow_blocked]),
-           {_, false} <-
-             {:user_blocked, User.blocks?(followed, follower) && deny_follow_blocked},
+           {_, false} <- {:user_blocked, User.blocks?(followed, follower) && deny_follow_blocked},
            {_, false} <- {:user_locked, User.locked?(followed)},
            {_, {:ok, follower}} <- {:follow, User.follow(follower, followed)},
            {_, {:ok, _}} <-
@@ -609,16 +596,22 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
     with %User{ap_id: ^actor_id} = actor <- User.get_cached_by_ap_id(object["id"]) do
       {:ok, new_user_data} = ActivityPub.user_data_from_user_object(object)
 
-      banner = new_user_data[:info]["banner"]
-      locked = new_user_data[:info]["locked"] || false
+      banner = new_user_data[:info][:banner]
+      locked = new_user_data[:info][:locked] || false
+      attachment = get_in(new_user_data, [:info, :source_data, "attachment"]) || []
+
+      fields =
+        attachment
+        |> Enum.filter(fn %{"type" => t} -> t == "PropertyValue" end)
+        |> Enum.map(fn fields -> Map.take(fields, ["name", "value"]) end)
 
       update_data =
         new_user_data
         |> Map.take([:name, :bio, :avatar])
-        |> Map.put(:info, %{"banner" => banner, "locked" => locked})
+        |> Map.put(:info, %{banner: banner, locked: locked, fields: fields})
 
       actor
-      |> User.upgrade_changeset(update_data)
+      |> User.upgrade_changeset(update_data, true)
       |> User.update_and_set_cache()
 
       ActivityPub.update(%{
@@ -656,20 +649,7 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
       nil ->
         case User.get_cached_by_ap_id(object_id) do
           %User{ap_id: ^actor} = user ->
-            {:ok, followers} = User.get_followers(user)
-
-            Enum.each(followers, fn follower ->
-              User.unfollow(follower, user)
-            end)
-
-            {:ok, friends} = User.get_friends(user)
-
-            Enum.each(friends, fn followed ->
-              User.unfollow(user, followed)
-            end)
-
-            User.invalidate_cache(user)
-            Repo.delete(user)
+            User.delete(user)
 
           nil ->
             :error
@@ -727,8 +707,7 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
         } = _data,
         _options
       ) do
-    with true <- Pleroma.Config.get([:activitypub, :accept_blocks]),
-         %User{local: true} = blocked <- User.get_cached_by_ap_id(blocked),
+    with %User{local: true} = blocked <- User.get_cached_by_ap_id(blocked),
          {:ok, %User{} = blocker} <- User.get_or_fetch_by_ap_id(blocker),
          {:ok, activity} <- ActivityPub.unblock(blocker, blocked, id, false) do
       User.unblock(blocker, blocked)
@@ -742,8 +721,7 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
         %{"type" => "Block", "object" => blocked, "actor" => blocker, "id" => id} = _data,
         _options
       ) do
-    with true <- Pleroma.Config.get([:activitypub, :accept_blocks]),
-         %User{local: true} = blocked = User.get_cached_by_ap_id(blocked),
+    with %User{local: true} = blocked = User.get_cached_by_ap_id(blocked),
          {:ok, %User{} = blocker} = User.get_or_fetch_by_ap_id(blocker),
          {:ok, activity} <- ActivityPub.block(blocker, blocked, id, false) do
       User.unfollow(blocker, blocked)
@@ -798,7 +776,6 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
     |> add_mention_tags
     |> add_emoji_tags
     |> add_attributed_to
-    |> add_likes
     |> prepare_attachments
     |> set_conversation
     |> set_reply_to_uri
@@ -985,22 +962,6 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
     |> Map.put("attributedTo", attributed_to)
   end
 
-  def add_likes(%{"id" => id, "like_count" => likes} = object) do
-    likes = %{
-      "id" => "#{id}/likes",
-      "first" => "#{id}/likes?page=1",
-      "type" => "OrderedCollection",
-      "totalItems" => likes
-    }
-
-    object
-    |> Map.put("likes", likes)
-  end
-
-  def add_likes(object) do
-    object
-  end
-
   def prepare_attachments(object) do
     attachments =
       (object["attachment"] || [])
@@ -1016,6 +977,7 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
   defp strip_internal_fields(object) do
     object
     |> Map.drop([
+      "likes",
       "like_count",
       "announcements",
       "announcement_count",
@@ -1090,10 +1052,6 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
         PleromaJobQueue.enqueue(:transmogrifier, __MODULE__, [:user_upgrade, user])
       end
 
-      if Pleroma.Config.get([:instance, :external_user_synchronization]) do
-        update_following_followers_counters(user)
-      end
-
       {:ok, user}
     else
       %User{} = user -> {:ok, user}
@@ -1126,27 +1084,4 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
     data
     |> maybe_fix_user_url
   end
-
-  def update_following_followers_counters(user) do
-    info = %{}
-
-    following = fetch_counter(user.following_address)
-    info = if following, do: Map.put(info, :following_count, following), else: info
-
-    followers = fetch_counter(user.follower_address)
-    info = if followers, do: Map.put(info, :follower_count, followers), else: info
-
-    User.set_info_cache(user, info)
-  end
-
-  defp fetch_counter(url) do
-    with {:ok, %{body: body, status: code}} when code in 200..299 <-
-           Pleroma.HTTP.get(
-             url,
-             [{:Accept, "application/activity+json"}]
-           ),
-         {:ok, data} <- Jason.decode(body) do
-      data["totalItems"]
-    end
-  end
 end
diff --git a/lib/pleroma/web/activity_pub/utils.ex b/lib/pleroma/web/activity_pub/utils.ex
index c146f59d4..1c3058658 100644
--- a/lib/pleroma/web/activity_pub/utils.ex
+++ b/lib/pleroma/web/activity_pub/utils.ex
@@ -18,6 +18,7 @@ defmodule Pleroma.Web.ActivityPub.Utils do
   import Ecto.Query
 
   require Logger
+  require Pleroma.Constants
 
   @supported_object_types ["Article", "Note", "Video", "Page", "Question", "Answer"]
   @supported_report_states ~w(open closed resolved)
@@ -250,20 +251,6 @@ defmodule Pleroma.Web.ActivityPub.Utils do
 
   def insert_full_object(map), do: {:ok, map, nil}
 
-  def update_object_in_activities(%{data: %{"id" => id}} = object) do
-    # TODO
-    # Update activities that already had this. Could be done in a seperate process.
-    # Alternatively, just don't do this and fetch the current object each time. Most
-    # could probably be taken from cache.
-    relevant_activities = Activity.get_all_create_by_object_ap_id(id)
-
-    Enum.map(relevant_activities, fn activity ->
-      new_activity_data = activity.data |> Map.put("object", object.data)
-      changeset = Changeset.change(activity, data: new_activity_data)
-      Repo.update(changeset)
-    end)
-  end
-
   #### Like-related helpers
 
   @doc """
@@ -346,8 +333,7 @@ defmodule Pleroma.Web.ActivityPub.Utils do
            |> Map.put("#{property}_count", length(element))
            |> Map.put("#{property}s", element),
          changeset <- Changeset.change(object, data: new_data),
-         {:ok, object} <- Object.update_and_set_cache(changeset),
-         _ <- update_object_in_activities(object) do
+         {:ok, object} <- Object.update_and_set_cache(changeset) do
       {:ok, object}
     end
   end
@@ -388,6 +374,7 @@ defmodule Pleroma.Web.ActivityPub.Utils do
         [state, actor, object]
       )
 
+      User.set_follow_state_cache(actor, object, state)
       activity = Activity.get_by_id(activity.id)
       {:ok, activity}
     rescue
@@ -396,12 +383,16 @@ defmodule Pleroma.Web.ActivityPub.Utils do
     end
   end
 
-  def update_follow_state(%Activity{} = activity, state) do
+  def update_follow_state(
+        %Activity{data: %{"actor" => actor, "object" => object}} = activity,
+        state
+      ) do
     with new_data <-
            activity.data
            |> Map.put("state", state),
          changeset <- Changeset.change(activity, data: new_data),
-         {:ok, activity} <- Repo.update(changeset) do
+         {:ok, activity} <- Repo.update(changeset),
+         _ <- User.set_follow_state_cache(actor, object, state) do
       {:ok, activity}
     end
   end
@@ -418,7 +409,7 @@ defmodule Pleroma.Web.ActivityPub.Utils do
       "type" => "Follow",
       "actor" => follower_id,
       "to" => [followed_id],
-      "cc" => ["https://www.w3.org/ns/activitystreams#Public"],
+      "cc" => [Pleroma.Constants.as_public()],
       "object" => followed_id,
       "state" => "pending"
     }
@@ -510,7 +501,7 @@ defmodule Pleroma.Web.ActivityPub.Utils do
       "actor" => ap_id,
       "object" => id,
       "to" => [user.follower_address, object.data["actor"]],
-      "cc" => ["https://www.w3.org/ns/activitystreams#Public"],
+      "cc" => [Pleroma.Constants.as_public()],
       "context" => object.data["context"]
     }
 
@@ -530,7 +521,7 @@ defmodule Pleroma.Web.ActivityPub.Utils do
       "actor" => ap_id,
       "object" => activity.data,
       "to" => [user.follower_address, activity.data["actor"]],
-      "cc" => ["https://www.w3.org/ns/activitystreams#Public"],
+      "cc" => [Pleroma.Constants.as_public()],
       "context" => context
     }
 
@@ -547,7 +538,7 @@ defmodule Pleroma.Web.ActivityPub.Utils do
       "actor" => ap_id,
       "object" => activity.data,
       "to" => [user.follower_address, activity.data["actor"]],
-      "cc" => ["https://www.w3.org/ns/activitystreams#Public"],
+      "cc" => [Pleroma.Constants.as_public()],
       "context" => context
     }
 
@@ -556,7 +547,7 @@ defmodule Pleroma.Web.ActivityPub.Utils do
 
   def add_announce_to_object(
         %Activity{
-          data: %{"actor" => actor, "cc" => ["https://www.w3.org/ns/activitystreams#Public"]}
+          data: %{"actor" => actor, "cc" => [Pleroma.Constants.as_public()]}
         },
         object
       ) do
@@ -765,7 +756,7 @@ defmodule Pleroma.Web.ActivityPub.Utils do
        ) do
     cc = Map.get(data, "cc", [])
     follower_address = User.get_cached_by_ap_id(data["actor"]).follower_address
-    public = "https://www.w3.org/ns/activitystreams#Public"
+    public = Pleroma.Constants.as_public()
 
     case visibility do
       "public" ->
diff --git a/lib/pleroma/web/activity_pub/views/object_view.ex b/lib/pleroma/web/activity_pub/views/object_view.ex
index 6028b773c..94d05f49b 100644
--- a/lib/pleroma/web/activity_pub/views/object_view.ex
+++ b/lib/pleroma/web/activity_pub/views/object_view.ex
@@ -66,8 +66,10 @@ defmodule Pleroma.Web.ActivityPub.ObjectView do
       "orderedItems" => items
     }
 
-    if offset < total do
+    if offset + length(items) < total do
       Map.put(map, "next", "#{iri}?page=#{page + 1}")
+    else
+      map
     end
   end
 end
diff --git a/lib/pleroma/web/activity_pub/views/user_view.ex b/lib/pleroma/web/activity_pub/views/user_view.ex
index 639519e0a..7be734b26 100644
--- a/lib/pleroma/web/activity_pub/views/user_view.ex
+++ b/lib/pleroma/web/activity_pub/views/user_view.ex
@@ -65,7 +65,7 @@ defmodule Pleroma.Web.ActivityPub.UserView do
     do: render("service.json", %{user: user})
 
   def render("user.json", %{user: %User{nickname: "internal." <> _} = user}),
-    do: render("service.json", %{user: user})
+    do: render("service.json", %{user: user}) |> Map.put("preferredUsername", user.nickname)
 
   def render("user.json", %{user: user}) do
     {:ok, user} = User.ensure_keys_present(user)
@@ -80,6 +80,17 @@ defmodule Pleroma.Web.ActivityPub.UserView do
       |> Transmogrifier.add_emoji_tags()
       |> Map.get("tag", [])
 
+    fields =
+      user.info
+      |> User.Info.fields()
+      |> Enum.map(fn %{"name" => name, "value" => value} ->
+        %{
+          "name" => Pleroma.HTML.strip_tags(name),
+          "value" => Pleroma.HTML.filter_tags(value, Pleroma.HTML.Scrubber.LinksOnly)
+        }
+      end)
+      |> Enum.map(&Map.put(&1, "type", "PropertyValue"))
+
     %{
       "id" => user.ap_id,
       "type" => "Person",
@@ -98,6 +109,7 @@ defmodule Pleroma.Web.ActivityPub.UserView do
         "publicKeyPem" => public_key
       },
       "endpoints" => endpoints,
+      "attachment" => fields,
       "tag" => (user.info.source_data["tag"] || []) ++ user_tags
     }
     |> Map.merge(maybe_make_image(&User.avatar_url/2, "icon", user))
diff --git a/lib/pleroma/web/activity_pub/visibility.ex b/lib/pleroma/web/activity_pub/visibility.ex
index 097fceb08..dfb166b65 100644
--- a/lib/pleroma/web/activity_pub/visibility.ex
+++ b/lib/pleroma/web/activity_pub/visibility.ex
@@ -8,14 +8,14 @@ defmodule Pleroma.Web.ActivityPub.Visibility do
   alias Pleroma.Repo
   alias Pleroma.User
 
-  @public "https://www.w3.org/ns/activitystreams#Public"
+  require Pleroma.Constants
 
   @spec is_public?(Object.t() | Activity.t() | map()) :: boolean()
   def is_public?(%Object{data: %{"type" => "Tombstone"}}), do: false
   def is_public?(%Object{data: data}), do: is_public?(data)
   def is_public?(%Activity{data: data}), do: is_public?(data)
   def is_public?(%{"directMessage" => true}), do: false
-  def is_public?(data), do: @public in (data["to"] ++ (data["cc"] || []))
+  def is_public?(data), do: Pleroma.Constants.as_public() in (data["to"] ++ (data["cc"] || []))
 
   def is_private?(activity) do
     with false <- is_public?(activity),
@@ -73,10 +73,10 @@ defmodule Pleroma.Web.ActivityPub.Visibility do
     cc = object.data["cc"] || []
 
     cond do
-      @public in to ->
+      Pleroma.Constants.as_public() in to ->
         "public"
 
-      @public in cc ->
+      Pleroma.Constants.as_public() in cc ->
         "unlisted"
 
       # this should use the sql for the object's activity
diff --git a/lib/pleroma/web/admin_api/admin_api_controller.ex b/lib/pleroma/web/admin_api/admin_api_controller.ex
index 1ae5acd91..2d3d0adc4 100644
--- a/lib/pleroma/web/admin_api/admin_api_controller.ex
+++ b/lib/pleroma/web/admin_api/admin_api_controller.ex
@@ -379,6 +379,16 @@ defmodule Pleroma.Web.AdminAPI.AdminAPIController do
     end
   end
 
+  def migrate_to_db(conn, _params) do
+    Mix.Tasks.Pleroma.Config.run(["migrate_to_db"])
+    json(conn, %{})
+  end
+
+  def migrate_from_db(conn, _params) do
+    Mix.Tasks.Pleroma.Config.run(["migrate_from_db", Pleroma.Config.get(:env), "true"])
+    json(conn, %{})
+  end
+
   def config_show(conn, _params) do
     configs = Pleroma.Repo.all(Config)
 
@@ -392,9 +402,9 @@ defmodule Pleroma.Web.AdminAPI.AdminAPIController do
       if Pleroma.Config.get([:instance, :dynamic_configuration]) do
         updated =
           Enum.map(configs, fn
-            %{"group" => group, "key" => key, "delete" => "true"} ->
-              {:ok, _} = Config.delete(%{group: group, key: key})
-              nil
+            %{"group" => group, "key" => key, "delete" => "true"} = params ->
+              {:ok, config} = Config.delete(%{group: group, key: key, subkeys: params["subkeys"]})
+              config
 
             %{"group" => group, "key" => key, "value" => value} ->
               {:ok, config} = Config.update_or_create(%{group: group, key: key, value: value})
diff --git a/lib/pleroma/web/admin_api/config.ex b/lib/pleroma/web/admin_api/config.ex
index dde05ea7b..a10cc779b 100644
--- a/lib/pleroma/web/admin_api/config.ex
+++ b/lib/pleroma/web/admin_api/config.ex
@@ -55,8 +55,19 @@ defmodule Pleroma.Web.AdminAPI.Config do
 
   @spec delete(map()) :: {:ok, Config.t()} | {:error, Changeset.t()}
   def delete(params) do
-    with %Config{} = config <- Config.get_by_params(params) do
-      Repo.delete(config)
+    with %Config{} = config <- Config.get_by_params(Map.delete(params, :subkeys)) do
+      if params[:subkeys] do
+        updated_value =
+          Keyword.drop(
+            :erlang.binary_to_term(config.value),
+            Enum.map(params[:subkeys], &do_transform_string(&1))
+          )
+
+        Config.update(config, %{value: updated_value})
+      else
+        Repo.delete(config)
+        {:ok, nil}
+      end
     else
       nil ->
         err =
diff --git a/lib/pleroma/web/auth/authenticator.ex b/lib/pleroma/web/auth/authenticator.ex
index d4e0ffa80..dd49987f7 100644
--- a/lib/pleroma/web/auth/authenticator.ex
+++ b/lib/pleroma/web/auth/authenticator.ex
@@ -21,8 +21,7 @@ defmodule Pleroma.Web.Auth.Authenticator do
   def create_from_registration(plug, registration),
     do: implementation().create_from_registration(plug, registration)
 
-  @callback get_registration(Plug.Conn.t()) ::
-              {:ok, Registration.t()} | {:error, any()}
+  @callback get_registration(Plug.Conn.t()) :: {:ok, Registration.t()} | {:error, any()}
   def get_registration(plug), do: implementation().get_registration(plug)
 
   @callback handle_error(Plug.Conn.t(), any()) :: any()
diff --git a/lib/pleroma/web/chat_channel.ex b/lib/pleroma/web/chat_channel.ex
index f63f4bda1..b543909f1 100644
--- a/lib/pleroma/web/chat_channel.ex
+++ b/lib/pleroma/web/chat_channel.ex
@@ -33,9 +33,11 @@ defmodule Pleroma.Web.ChatChannel do
 end
 
 defmodule Pleroma.Web.ChatChannel.ChatChannelState do
+  use Agent
+
   @max_messages 20
 
-  def start_link do
+  def start_link(_) do
     Agent.start_link(fn -> %{max_id: 1, messages: []} end, name: __MODULE__)
   end
 
diff --git a/lib/pleroma/web/common_api/common_api.ex b/lib/pleroma/web/common_api/common_api.ex
index 261d60392..69120cc19 100644
--- a/lib/pleroma/web/common_api/common_api.ex
+++ b/lib/pleroma/web/common_api/common_api.ex
@@ -5,6 +5,7 @@
 defmodule Pleroma.Web.CommonAPI do
   alias Pleroma.Activity
   alias Pleroma.ActivityExpiration
+  alias Pleroma.Conversation.Participation
   alias Pleroma.Formatter
   alias Pleroma.Object
   alias Pleroma.ThreadMute
@@ -172,21 +173,25 @@ defmodule Pleroma.Web.CommonAPI do
     end)
   end
 
-  def get_visibility(%{"visibility" => visibility}, in_reply_to)
+  def get_visibility(_, _, %Participation{}) do
+    {"direct", "direct"}
+  end
+
+  def get_visibility(%{"visibility" => visibility}, in_reply_to, _)
       when visibility in ~w{public unlisted private direct},
       do: {visibility, get_replied_to_visibility(in_reply_to)}
 
-  def get_visibility(%{"visibility" => "list:" <> list_id}, in_reply_to) do
+  def get_visibility(%{"visibility" => "list:" <> list_id}, in_reply_to, _) do
     visibility = {:list, String.to_integer(list_id)}
     {visibility, get_replied_to_visibility(in_reply_to)}
   end
 
-  def get_visibility(_, in_reply_to) when not is_nil(in_reply_to) do
+  def get_visibility(_, in_reply_to, _) when not is_nil(in_reply_to) do
     visibility = get_replied_to_visibility(in_reply_to)
     {visibility, visibility}
   end
 
-  def get_visibility(_, in_reply_to), do: {"public", get_replied_to_visibility(in_reply_to)}
+  def get_visibility(_, in_reply_to, _), do: {"public", get_replied_to_visibility(in_reply_to)}
 
   def get_replied_to_visibility(nil), do: nil
 
@@ -212,7 +217,9 @@ defmodule Pleroma.Web.CommonAPI do
     with status <- String.trim(status),
          attachments <- attachments_from_ids(data),
          in_reply_to <- get_replied_to_activity(data["in_reply_to_status_id"]),
-         {visibility, in_reply_to_visibility} <- get_visibility(data, in_reply_to),
+         in_reply_to_conversation <- Participation.get(data["in_reply_to_conversation_id"]),
+         {visibility, in_reply_to_visibility} <-
+           get_visibility(data, in_reply_to, in_reply_to_conversation),
          {_, false} <-
            {:private_to_public, in_reply_to_visibility == "direct" && visibility != "direct"},
          {content_html, mentions, tags} <-
@@ -225,8 +232,9 @@ defmodule Pleroma.Web.CommonAPI do
          mentioned_users <- for({_, mentioned_user} <- mentions, do: mentioned_user.ap_id),
          addressed_users <- get_addressed_users(mentioned_users, data["to"]),
          {poll, poll_emoji} <- make_poll_data(data),
-         {to, cc} <- get_to_and_cc(user, addressed_users, in_reply_to, visibility),
-         context <- make_context(in_reply_to),
+         {to, cc} <-
+           get_to_and_cc(user, addressed_users, in_reply_to, visibility, in_reply_to_conversation),
+         context <- make_context(in_reply_to, in_reply_to_conversation),
          cw <- data["spoiler_text"] || "",
          sensitive <- data["sensitive"] || Enum.member?(tags, {"#nsfw", "nsfw"}),
          {:ok, expires_at} <- check_expiry_date(data["expires_at"]),
@@ -321,8 +329,7 @@ defmodule Pleroma.Web.CommonAPI do
            }
          } = activity <- get_by_id_or_ap_id(id_or_ap_id),
          true <- Visibility.is_public?(activity),
-         %{valid?: true} = info_changeset <-
-           User.Info.add_pinnned_activity(user.info, activity),
+         %{valid?: true} = info_changeset <- User.Info.add_pinnned_activity(user.info, activity),
          changeset <-
            Ecto.Changeset.change(user) |> Ecto.Changeset.put_embed(:info, info_changeset),
          {:ok, _user} <- User.update_and_set_cache(changeset) do
diff --git a/lib/pleroma/web/common_api/utils.ex b/lib/pleroma/web/common_api/utils.ex
index 94462c3dd..61b96aba9 100644
--- a/lib/pleroma/web/common_api/utils.ex
+++ b/lib/pleroma/web/common_api/utils.ex
@@ -8,6 +8,7 @@ defmodule Pleroma.Web.CommonAPI.Utils do
   alias Calendar.Strftime
   alias Pleroma.Activity
   alias Pleroma.Config
+  alias Pleroma.Conversation.Participation
   alias Pleroma.Formatter
   alias Pleroma.Object
   alias Pleroma.Plugs.AuthenticationPlug
@@ -19,11 +20,17 @@ defmodule Pleroma.Web.CommonAPI.Utils do
   alias Pleroma.Web.MediaProxy
 
   require Logger
+  require Pleroma.Constants
 
   # This is a hack for twidere.
   def get_by_id_or_ap_id(id) do
     activity =
-      Activity.get_by_id_with_object(id) || Activity.get_create_by_object_ap_id_with_object(id)
+      with true <- Pleroma.FlakeId.is_flake_id?(id),
+           %Activity{} = activity <- Activity.get_by_id_with_object(id) do
+        activity
+      else
+        _ -> Activity.get_create_by_object_ap_id_with_object(id)
+      end
 
     activity &&
       if activity.data["type"] == "Create" do
@@ -41,32 +48,61 @@ defmodule Pleroma.Web.CommonAPI.Utils do
 
   def get_replied_to_activity(_), do: nil
 
-  def attachments_from_ids(data) do
-    if Map.has_key?(data, "descriptions") do
-      attachments_from_ids_descs(data["media_ids"], data["descriptions"])
-    else
-      attachments_from_ids_no_descs(data["media_ids"])
-    end
+  def attachments_from_ids(%{"media_ids" => ids, "descriptions" => desc} = _) do
+    attachments_from_ids_descs(ids, desc)
   end
 
+  def attachments_from_ids(%{"media_ids" => ids} = _) do
+    attachments_from_ids_no_descs(ids)
+  end
+
+  def attachments_from_ids(_), do: []
+
+  def attachments_from_ids_no_descs([]), do: []
+
   def attachments_from_ids_no_descs(ids) do
-    Enum.map(ids || [], fn media_id ->
-      Repo.get(Object, media_id).data
+    Enum.map(ids, fn media_id ->
+      case Repo.get(Object, media_id) do
+        %Object{data: data} = _ -> data
+        _ -> nil
+      end
     end)
+    |> Enum.filter(& &1)
   end
 
+  def attachments_from_ids_descs([], _), do: []
+
   def attachments_from_ids_descs(ids, descs_str) do
     {_, descs} = Jason.decode(descs_str)
 
-    Enum.map(ids || [], fn media_id ->
-      Map.put(Repo.get(Object, media_id).data, "name", descs[media_id])
+    Enum.map(ids, fn media_id ->
+      case Repo.get(Object, media_id) do
+        %Object{data: data} = _ ->
+          Map.put(data, "name", descs[media_id])
+
+        _ ->
+          nil
+      end
     end)
+    |> Enum.filter(& &1)
   end
 
-  @spec get_to_and_cc(User.t(), list(String.t()), Activity.t() | nil, String.t()) ::
+  @spec get_to_and_cc(
+          User.t(),
+          list(String.t()),
+          Activity.t() | nil,
+          String.t(),
+          Participation.t() | nil
+        ) ::
           {list(String.t()), list(String.t())}
-  def get_to_and_cc(user, mentioned_users, inReplyTo, "public") do
-    to = ["https://www.w3.org/ns/activitystreams#Public" | mentioned_users]
+
+  def get_to_and_cc(_, _, _, _, %Participation{} = participation) do
+    participation = Repo.preload(participation, :recipients)
+    {Enum.map(participation.recipients, & &1.ap_id), []}
+  end
+
+  def get_to_and_cc(user, mentioned_users, inReplyTo, "public", _) do
+    to = [Pleroma.Constants.as_public() | mentioned_users]
     cc = [user.follower_address]
 
     if inReplyTo do
@@ -76,9 +112,9 @@ defmodule Pleroma.Web.CommonAPI.Utils do
     end
   end
 
-  def get_to_and_cc(user, mentioned_users, inReplyTo, "unlisted") do
+  def get_to_and_cc(user, mentioned_users, inReplyTo, "unlisted", _) do
     to = [user.follower_address | mentioned_users]
-    cc = ["https://www.w3.org/ns/activitystreams#Public"]
+    cc = [Pleroma.Constants.as_public()]
 
     if inReplyTo do
       {Enum.uniq([inReplyTo.data["actor"] | to]), cc}
@@ -87,12 +123,12 @@ defmodule Pleroma.Web.CommonAPI.Utils do
     end
   end
 
-  def get_to_and_cc(user, mentioned_users, inReplyTo, "private") do
-    {to, cc} = get_to_and_cc(user, mentioned_users, inReplyTo, "direct")
+  def get_to_and_cc(user, mentioned_users, inReplyTo, "private", _) do
+    {to, cc} = get_to_and_cc(user, mentioned_users, inReplyTo, "direct", nil)
     {[user.follower_address | to], cc}
   end
 
-  def get_to_and_cc(_user, mentioned_users, inReplyTo, "direct") do
+  def get_to_and_cc(_user, mentioned_users, inReplyTo, "direct", _) do
     if inReplyTo do
       {Enum.uniq([inReplyTo.data["actor"] | mentioned_users]), []}
     else
@@ -100,7 +136,7 @@ defmodule Pleroma.Web.CommonAPI.Utils do
     end
   end
 
-  def get_to_and_cc(_user, mentions, _inReplyTo, {:list, _}), do: {mentions, []}
+  def get_to_and_cc(_user, mentions, _inReplyTo, {:list, _}, _), do: {mentions, []}
 
   def get_addressed_users(_, to) when is_list(to) do
     User.get_ap_ids_by_nicknames(to)
@@ -230,8 +266,12 @@ defmodule Pleroma.Web.CommonAPI.Utils do
 
   defp maybe_add_nsfw_tag(data, _), do: data
 
-  def make_context(%Activity{data: %{"context" => context}}), do: context
-  def make_context(_), do: Utils.generate_context_id()
+  def make_context(_, %Participation{} = participation) do
+    Repo.preload(participation, :conversation).conversation.ap_id
+  end
+
+  def make_context(%Activity{data: %{"context" => context}}, _), do: context
+  def make_context(_, _), do: Utils.generate_context_id()
 
   def maybe_add_attachments(parsed, _attachments, true = _no_links), do: parsed
 
@@ -241,20 +281,18 @@ defmodule Pleroma.Web.CommonAPI.Utils do
   end
 
   def add_attachments(text, attachments) do
-    attachment_text =
-      Enum.map(attachments, fn
-        %{"url" => [%{"href" => href} | _]} = attachment ->
-          name = attachment["name"] || URI.decode(Path.basename(href))
-          href = MediaProxy.url(href)
-          "<a href=\"#{href}\" class='attachment'>#{shortname(name)}</a>"
-
-        _ ->
-          ""
-      end)
-
+    attachment_text = Enum.map(attachments, &build_attachment_link/1)
     Enum.join([text | attachment_text], "<br>")
   end
 
+  defp build_attachment_link(%{"url" => [%{"href" => href} | _]} = attachment) do
+    name = attachment["name"] || URI.decode(Path.basename(href))
+    href = MediaProxy.url(href)
+    "<a href=\"#{href}\" class='attachment'>#{shortname(name)}</a>"
+  end
+
+  defp build_attachment_link(_), do: ""
+
   def format_input(text, format, options \\ [])
 
   @doc """
@@ -314,7 +352,7 @@ defmodule Pleroma.Web.CommonAPI.Utils do
         sensitive \\ false,
         merge \\ %{}
       ) do
-    object = %{
+    %{
       "type" => "Note",
       "to" => to,
       "cc" => cc,
@@ -324,18 +362,20 @@ defmodule Pleroma.Web.CommonAPI.Utils do
       "context" => context,
       "attachment" => attachments,
       "actor" => actor,
-      "tag" => tags |> Enum.map(fn {_, tag} -> tag end) |> Enum.uniq()
+      "tag" => Keyword.values(tags) |> Enum.uniq()
     }
+    |> add_in_reply_to(in_reply_to)
+    |> Map.merge(merge)
+  end
 
-    object =
-      with false <- is_nil(in_reply_to),
-           %Object{} = in_reply_to_object <- Object.normalize(in_reply_to) do
-        Map.put(object, "inReplyTo", in_reply_to_object.data["id"])
-      else
-        _ -> object
-      end
+  defp add_in_reply_to(object, nil), do: object
 
-    Map.merge(object, merge)
+  defp add_in_reply_to(object, in_reply_to) do
+    with %Object{} = in_reply_to_object <- Object.normalize(in_reply_to) do
+      Map.put(object, "inReplyTo", in_reply_to_object.data["id"])
+    else
+      _ -> object
+    end
   end
 
   def format_naive_asctime(date) do
@@ -367,17 +407,16 @@ defmodule Pleroma.Web.CommonAPI.Utils do
     |> String.replace(~r/(\.\d+)?$/, ".000Z", global: false)
   end
 
-  def to_masto_date(date) do
-    try do
-      date
-      |> NaiveDateTime.from_iso8601!()
-      |> NaiveDateTime.to_iso8601()
-      |> String.replace(~r/(\.\d+)?$/, ".000Z", global: false)
-    rescue
-      _e -> ""
+  def to_masto_date(date) when is_binary(date) do
+    with {:ok, date} <- NaiveDateTime.from_iso8601(date) do
+      to_masto_date(date)
+    else
+      _ -> ""
     end
   end
 
+  def to_masto_date(_), do: ""
+
   defp shortname(name) do
     if String.length(name) < 30 do
       name
@@ -422,7 +461,7 @@ defmodule Pleroma.Web.CommonAPI.Utils do
 
     object_data =
       cond do
-        !is_nil(object) ->
+        not is_nil(object) ->
           object.data
 
         is_map(data["object"]) ->
@@ -466,9 +505,9 @@ defmodule Pleroma.Web.CommonAPI.Utils do
 
   def maybe_extract_mentions(%{"tag" => tag}) do
     tag
-    |> Enum.filter(fn x -> is_map(x) end)
-    |> Enum.filter(fn x -> x["type"] == "Mention" end)
+    |> Enum.filter(fn x -> is_map(x) && x["type"] == "Mention" end)
     |> Enum.map(fn x -> x["href"] end)
+    |> Enum.uniq()
   end
 
   def maybe_extract_mentions(_), do: []
diff --git a/lib/pleroma/web/controller_helper.ex b/lib/pleroma/web/controller_helper.ex
index 8a753bb4f..eeac9f503 100644
--- a/lib/pleroma/web/controller_helper.ex
+++ b/lib/pleroma/web/controller_helper.ex
@@ -33,4 +33,80 @@ defmodule Pleroma.Web.ControllerHelper do
   end
 
   defp param_to_integer(_, default), do: default
+
+  def add_link_headers(
+        conn,
+        method,
+        activities,
+        param \\ nil,
+        params \\ %{},
+        func3 \\ nil,
+        func4 \\ nil
+      ) do
+    params =
+      conn.params
+      |> Map.drop(["since_id", "max_id", "min_id"])
+      |> Map.merge(params)
+
+    last = List.last(activities)
+
+    func3 = func3 || (&mastodon_api_url/3)
+    func4 = func4 || (&mastodon_api_url/4)
+
+    if last do
+      max_id = last.id
+
+      limit =
+        params
+        |> Map.get("limit", "20")
+        |> String.to_integer()
+
+      min_id =
+        if length(activities) <= limit do
+          activities
+          |> List.first()
+          |> Map.get(:id)
+        else
+          activities
+          |> Enum.at(limit * -1)
+          |> Map.get(:id)
+        end
+
+      {next_url, prev_url} =
+        if param do
+          {
+            func4.(
+              Pleroma.Web.Endpoint,
+              method,
+              param,
+              Map.merge(params, %{max_id: max_id})
+            ),
+            func4.(
+              Pleroma.Web.Endpoint,
+              method,
+              param,
+              Map.merge(params, %{min_id: min_id})
+            )
+          }
+        else
+          {
+            func3.(
+              Pleroma.Web.Endpoint,
+              method,
+              Map.merge(params, %{max_id: max_id})
+            ),
+            func3.(
+              Pleroma.Web.Endpoint,
+              method,
+              Map.merge(params, %{min_id: min_id})
+            )
+          }
+        end
+
+      conn
+      |> put_resp_header("link", "<#{next_url}>; rel=\"next\", <#{prev_url}>; rel=\"prev\"")
+    else
+      conn
+    end
+  end
 end
diff --git a/lib/pleroma/web/fallback_redirect_controller.ex b/lib/pleroma/web/fallback_redirect_controller.ex
new file mode 100644
index 000000000..5fbf3695f
--- /dev/null
+++ b/lib/pleroma/web/fallback_redirect_controller.ex
@@ -0,0 +1,77 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Fallback.RedirectController do
+  use Pleroma.Web, :controller
+  require Logger
+  alias Pleroma.User
+  alias Pleroma.Web.Metadata
+
+  def api_not_implemented(conn, _params) do
+    conn
+    |> put_status(404)
+    |> json(%{error: "Not implemented"})
+  end
+
+  def redirector(conn, _params, code \\ 200)
+
+  # redirect to admin section
+  # /pleroma/admin -> /pleroma/admin/
+  #
+  def redirector(conn, %{"path" => ["pleroma", "admin"]} = _, _code) do
+    redirect(conn, to: "/pleroma/admin/")
+  end
+
+  def redirector(conn, _params, code) do
+    conn
+    |> put_resp_content_type("text/html")
+    |> send_file(code, index_file_path())
+  end
+
+  def redirector_with_meta(conn, %{"maybe_nickname_or_id" => maybe_nickname_or_id} = params) do
+    with %User{} = user <- User.get_cached_by_nickname_or_id(maybe_nickname_or_id) do
+      redirector_with_meta(conn, %{user: user})
+    else
+      nil ->
+        redirector(conn, params)
+    end
+  end
+
+  def redirector_with_meta(conn, params) do
+    {:ok, index_content} = File.read(index_file_path())
+
+    tags =
+      try do
+        Metadata.build_tags(params)
+      rescue
+        e ->
+          Logger.error(
+            "Metadata rendering for #{conn.request_path} failed.\n" <>
+              Exception.format(:error, e, __STACKTRACE__)
+          )
+
+          ""
+      end
+
+    response = String.replace(index_content, "<!--server-generated-meta-->", tags)
+
+    conn
+    |> put_resp_content_type("text/html")
+    |> send_resp(200, response)
+  end
+
+  def index_file_path do
+    Pleroma.Plugs.InstanceStatic.file_path("index.html")
+  end
+
+  def registration_page(conn, params) do
+    redirector(conn, params)
+  end
+
+  def empty(conn, _params) do
+    conn
+    |> put_status(204)
+    |> text("")
+  end
+end
diff --git a/lib/pleroma/web/federator/retry_queue.ex b/lib/pleroma/web/federator/retry_queue.ex
index 3db948c2e..9eab8c218 100644
--- a/lib/pleroma/web/federator/retry_queue.ex
+++ b/lib/pleroma/web/federator/retry_queue.ex
@@ -13,7 +13,7 @@ defmodule Pleroma.Web.Federator.RetryQueue do
     {:ok, %{args | queue_table: queue_table, running_jobs: :sets.new()}}
   end
 
-  def start_link do
+  def start_link(_) do
     enabled =
       if Pleroma.Config.get(:env) == :test,
         do: true,
diff --git a/lib/pleroma/web/mailer/subscription_controller.ex b/lib/pleroma/web/mailer/subscription_controller.ex
new file mode 100644
index 000000000..478a83518
--- /dev/null
+++ b/lib/pleroma/web/mailer/subscription_controller.ex
@@ -0,0 +1,20 @@
+defmodule Pleroma.Web.Mailer.SubscriptionController do
+  use Pleroma.Web, :controller
+
+  alias Pleroma.JWT
+  alias Pleroma.Repo
+  alias Pleroma.User
+
+  def unsubscribe(conn, %{"token" => encoded_token}) do
+    with {:ok, token} <- Base.decode64(encoded_token),
+         {:ok, claims} <- JWT.verify_and_validate(token),
+         %{"act" => %{"unsubscribe" => type}, "sub" => uid} <- claims,
+         %User{} = user <- Repo.get(User, uid),
+         {:ok, _user} <- User.switch_email_notifications(user, type, false) do
+      render(conn, "unsubscribe_success.html", email: user.email)
+    else
+      _err ->
+        render(conn, "unsubscribe_failure.html")
+    end
+  end
+end
diff --git a/lib/pleroma/web/mastodon_api/mastodon_api.ex b/lib/pleroma/web/mastodon_api/mastodon_api.ex
index 46944dcbc..ac01d1ff3 100644
--- a/lib/pleroma/web/mastodon_api/mastodon_api.ex
+++ b/lib/pleroma/web/mastodon_api/mastodon_api.ex
@@ -13,10 +13,8 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPI do
   alias Pleroma.User
   alias Pleroma.Web.CommonAPI
 
+  @spec follow(User.t(), User.t(), map) :: {:ok, User.t()} | {:error, String.t()}
   def follow(follower, followed, params \\ %{}) do
-    options = cast_params(params)
-    reblogs = options[:reblogs]
-
     result =
       if not User.following?(follower, followed) do
         CommonAPI.follow(follower, followed)
@@ -24,19 +22,25 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPI do
         {:ok, follower, followed, nil}
       end
 
-    with {:ok, follower, followed, _} <- result do
-      reblogs
-      |> case do
-        false -> CommonAPI.hide_reblogs(follower, followed)
-        _ -> CommonAPI.show_reblogs(follower, followed)
-      end
-      |> case do
+    with {:ok, follower, _followed, _} <- result do
+      options = cast_params(params)
+
+      case reblogs_visibility(options[:reblogs], result) do
         {:ok, follower} -> {:ok, follower}
         _ -> {:ok, follower}
       end
     end
   end
 
+  defp reblogs_visibility(false, {:ok, follower, followed, _}) do
+    CommonAPI.hide_reblogs(follower, followed)
+  end
+
+  defp reblogs_visibility(_, {:ok, follower, followed, _}) do
+    CommonAPI.show_reblogs(follower, followed)
+  end
+
+  @spec get_followers(User.t(), map()) :: list(User.t())
   def get_followers(user, params \\ %{}) do
     user
     |> User.get_followers_query()
diff --git a/lib/pleroma/web/mastodon_api/mastodon_api_controller.ex b/lib/pleroma/web/mastodon_api/mastodon_api_controller.ex
index d660f3f05..53cf95fbb 100644
--- a/lib/pleroma/web/mastodon_api/mastodon_api_controller.ex
+++ b/lib/pleroma/web/mastodon_api/mastodon_api_controller.ex
@@ -4,6 +4,10 @@
 
 defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
   use Pleroma.Web, :controller
+
+  import Pleroma.Web.ControllerHelper,
+    only: [json_response: 3, add_link_headers: 5, add_link_headers: 4, add_link_headers: 3]
+
   alias Ecto.Changeset
   alias Pleroma.Activity
   alias Pleroma.Bookmark
@@ -46,6 +50,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
   import Ecto.Query
 
   require Logger
+  require Pleroma.Constants
 
   @rate_limited_relations_actions ~w(follow unfollow)a
 
@@ -74,6 +79,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
   plug(RateLimiter, :app_account_creation when action == :account_register)
   plug(RateLimiter, :search when action in [:search, :search2, :account_search])
   plug(RateLimiter, :password_reset when action == :password_reset)
+  plug(RateLimiter, :account_confirmation_resend when action == :account_confirmation_resend)
 
   @local_mastodon_name "Mastodon-Local"
 
@@ -132,7 +138,9 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
     emojis_text = (user_params["display_name"] || "") <> (user_params["note"] || "")
 
     user_info_emojis =
-      ((user.info.emoji || []) ++ Formatter.get_emoji_map(emojis_text))
+      user.info
+      |> Map.get(:emoji, [])
+      |> Enum.concat(Formatter.get_emoji_map(emojis_text))
       |> Enum.dedup()
 
     info_params =
@@ -151,6 +159,12 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
         end)
       end)
       |> add_if_present(params, "default_scope", :default_scope)
+      |> add_if_present(params, "fields", :fields, fn fields ->
+        fields = Enum.map(fields, fn f -> Map.update!(f, "value", &AutoLinker.link(&1)) end)
+
+        {:ok, fields}
+      end)
+      |> add_if_present(params, "fields", :raw_fields)
       |> add_if_present(params, "pleroma_settings_store", :pleroma_settings_store, fn value ->
         {:ok, Map.merge(user.info.pleroma_settings_store, value)}
       end)
@@ -337,71 +351,6 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
     json(conn, mastodon_emoji)
   end
 
-  defp add_link_headers(conn, method, activities, param \\ nil, params \\ %{}) do
-    params =
-      conn.params
-      |> Map.drop(["since_id", "max_id", "min_id"])
-      |> Map.merge(params)
-
-    last = List.last(activities)
-
-    if last do
-      max_id = last.id
-
-      limit =
-        params
-        |> Map.get("limit", "20")
-        |> String.to_integer()
-
-      min_id =
-        if length(activities) <= limit do
-          activities
-          |> List.first()
-          |> Map.get(:id)
-        else
-          activities
-          |> Enum.at(limit * -1)
-          |> Map.get(:id)
-        end
-
-      {next_url, prev_url} =
-        if param do
-          {
-            mastodon_api_url(
-              Pleroma.Web.Endpoint,
-              method,
-              param,
-              Map.merge(params, %{max_id: max_id})
-            ),
-            mastodon_api_url(
-              Pleroma.Web.Endpoint,
-              method,
-              param,
-              Map.merge(params, %{min_id: min_id})
-            )
-          }
-        else
-          {
-            mastodon_api_url(
-              Pleroma.Web.Endpoint,
-              method,
-              Map.merge(params, %{max_id: max_id})
-            ),
-            mastodon_api_url(
-              Pleroma.Web.Endpoint,
-              method,
-              Map.merge(params, %{min_id: min_id})
-            )
-          }
-        end
-
-      conn
-      |> put_resp_header("link", "<#{next_url}>; rel=\"next\", <#{prev_url}>; rel=\"prev\"")
-    else
-      conn
-    end
-  end
-
   def home_timeline(%{assigns: %{user: user}} = conn, params) do
     params =
       params
@@ -430,6 +379,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
       |> Map.put("local_only", local_only)
       |> Map.put("blocking_user", user)
       |> Map.put("muting_user", user)
+      |> Map.put("user", user)
       |> ActivityPub.fetch_public_activities()
       |> Enum.reverse()
 
@@ -491,12 +441,9 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
          activities <-
            ActivityPub.fetch_activities_for_context(activity.data["context"], %{
              "blocking_user" => user,
-             "user" => user
+             "user" => user,
+             "exclude_id" => activity.id
            }),
-         activities <-
-           activities |> Enum.filter(fn %{id: aid} -> to_string(aid) != to_string(id) end),
-         activities <-
-           activities |> Enum.filter(fn %{data: %{"type" => type}} -> type == "Create" end),
          grouped_activities <- Enum.group_by(activities, fn %{id: id} -> id < activity.id end) do
       result = %{
         ancestors:
@@ -531,8 +478,8 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
       |> put_view(StatusView)
       |> try_render("poll.json", %{object: object, for: user})
     else
-      nil -> render_error(conn, :not_found, "Record not found")
-      false -> render_error(conn, :not_found, "Record not found")
+      error when is_nil(error) or error == false ->
+        render_error(conn, :not_found, "Record not found")
     end
   end
 
@@ -880,8 +827,8 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
   end
 
   def favourited_by(%{assigns: %{user: user}} = conn, %{"id" => id}) do
-    with %Activity{data: %{"object" => object}} <- Activity.get_by_id(id),
-         %Object{data: %{"likes" => likes}} <- Object.normalize(object) do
+    with %Activity{} = activity <- Activity.get_by_id_with_object(id),
+         %Object{data: %{"likes" => likes}} <- Object.normalize(activity) do
       q = from(u in User, where: u.ap_id in ^likes)
 
       users =
@@ -897,8 +844,8 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
   end
 
   def reblogged_by(%{assigns: %{user: user}} = conn, %{"id" => id}) do
-    with %Activity{data: %{"object" => object}} <- Activity.get_by_id(id),
-         %Object{data: %{"announcements" => announces}} <- Object.normalize(object) do
+    with %Activity{} = activity <- Activity.get_by_id_with_object(id),
+         %Object{data: %{"announcements" => announces}} <- Object.normalize(activity) do
       q = from(u in User, where: u.ap_id in ^announces)
 
       users =
@@ -939,6 +886,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
       |> Map.put("local_only", local_only)
       |> Map.put("blocking_user", user)
       |> Map.put("muting_user", user)
+      |> Map.put("user", user)
       |> Map.put("tag", tags)
       |> Map.put("tag_all", tag_all)
       |> Map.put("tag_reject", tag_reject)
@@ -1220,10 +1168,9 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
 
       recipients =
         if for_user do
-          ["https://www.w3.org/ns/activitystreams#Public"] ++
-            [for_user.ap_id | for_user.following]
+          [Pleroma.Constants.as_public()] ++ [for_user.ap_id | for_user.following]
         else
-          ["https://www.w3.org/ns/activitystreams#Public"]
+          [Pleroma.Constants.as_public()]
         end
 
       activities =
@@ -1346,6 +1293,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
         params
         |> Map.put("type", "Create")
         |> Map.put("blocking_user", user)
+        |> Map.put("user", user)
         |> Map.put("muting_user", user)
 
       # we must filter the following list for the user to avoid leaking statuses the user
@@ -1686,45 +1634,35 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
         |> String.replace("{{user}}", user)
 
       with {:ok, %{status: 200, body: body}} <-
-             HTTP.get(
-               url,
-               [],
-               adapter: [
-                 recv_timeout: timeout,
-                 pool: :default
-               ]
-             ),
+             HTTP.get(url, [], adapter: [recv_timeout: timeout, pool: :default]),
            {:ok, data} <- Jason.decode(body) do
         data =
           data
           |> Enum.slice(0, limit)
           |> Enum.map(fn x ->
-            Map.put(
-              x,
-              "id",
-              case User.get_or_fetch(x["acct"]) do
-                {:ok, %User{id: id}} -> id
-                _ -> 0
-              end
-            )
-          end)
-          |> Enum.map(fn x ->
-            Map.put(x, "avatar", MediaProxy.url(x["avatar"]))
-          end)
-          |> Enum.map(fn x ->
-            Map.put(x, "avatar_static", MediaProxy.url(x["avatar_static"]))
+            x
+            |> Map.put("id", fetch_suggestion_id(x))
+            |> Map.put("avatar", MediaProxy.url(x["avatar"]))
+            |> Map.put("avatar_static", MediaProxy.url(x["avatar_static"]))
           end)
 
-        conn
-        |> json(data)
+        json(conn, data)
       else
-        e -> Logger.error("Could not retrieve suggestions at fetch #{url}, #{inspect(e)}")
+        e ->
+          Logger.error("Could not retrieve suggestions at fetch #{url}, #{inspect(e)}")
       end
     else
       json(conn, [])
     end
   end
 
+  defp fetch_suggestion_id(attrs) do
+    case User.get_or_fetch(attrs["acct"]) do
+      {:ok, %User{id: id}} -> id
+      _ -> 0
+    end
+  end
+
   def status_card(%{assigns: %{user: user}} = conn, %{"id" => status_id}) do
     with %Activity{} = activity <- Activity.get_by_id(status_id),
          true <- Visibility.visible_for_user?(activity, user) do
@@ -1803,7 +1741,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
 
     conversations =
       Enum.map(participations, fn participation ->
-        ConversationView.render("participation.json", %{participation: participation, user: user})
+        ConversationView.render("participation.json", %{participation: participation, for: user})
       end)
 
     conn
@@ -1816,7 +1754,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
            Repo.get_by(Participation, id: participation_id, user_id: user.id),
          {:ok, participation} <- Participation.mark_as_read(participation) do
       participation_view =
-        ConversationView.render("participation.json", %{participation: participation, user: user})
+        ConversationView.render("participation.json", %{participation: participation, for: user})
 
       conn
       |> json(participation_view)
@@ -1839,6 +1777,16 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
     end
   end
 
+  def account_confirmation_resend(conn, params) do
+    nickname_or_email = params["email"] || params["nickname"]
+
+    with %User{} = user <- User.get_by_nickname_or_email(nickname_or_email),
+         {:ok, _} <- User.try_send_confirmation_email(user) do
+      conn
+      |> json_response(:no_content, "")
+    end
+  end
+
   def try_render(conn, target, params)
       when is_binary(target) do
     case render(conn, target, params) do
diff --git a/lib/pleroma/web/mastodon_api/views/account_view.ex b/lib/pleroma/web/mastodon_api/views/account_view.ex
index befb35c26..169116d0d 100644
--- a/lib/pleroma/web/mastodon_api/views/account_view.ex
+++ b/lib/pleroma/web/mastodon_api/views/account_view.ex
@@ -28,7 +28,7 @@ defmodule Pleroma.Web.MastodonAPI.AccountView do
       id: to_string(user.id),
       acct: user.nickname,
       username: username_from_nickname(user.nickname),
-      url: user.ap_id
+      url: User.profile_url(user)
     }
   end
 
@@ -37,11 +37,11 @@ defmodule Pleroma.Web.MastodonAPI.AccountView do
   end
 
   def render("relationship.json", %{user: %User{} = user, target: %User{} = target}) do
-    follow_activity = Pleroma.Web.ActivityPub.Utils.fetch_latest_follow(user, target)
+    follow_state = User.get_cached_follow_state(user, target)
 
     requested =
-      if follow_activity && !User.following?(target, user) do
-        follow_activity.data["state"] == "pending"
+      if follow_state && !User.following?(user, target) do
+        follow_state == "pending"
       else
         false
       end
@@ -50,13 +50,13 @@ defmodule Pleroma.Web.MastodonAPI.AccountView do
       id: to_string(target.id),
       following: User.following?(user, target),
       followed_by: User.following?(target, user),
-      blocking: User.blocks?(user, target),
-      blocked_by: User.blocks?(target, user),
+      blocking: User.blocks_ap_id?(user, target),
+      blocked_by: User.blocks_ap_id?(target, user),
       muting: User.mutes?(user, target),
       muting_notifications: User.muted_notifications?(user, target),
       subscribing: User.subscribed_to?(user, target),
       requested: requested,
-      domain_blocking: false,
+      domain_blocking: User.blocks_domain?(user, target),
       showing_reblogs: User.showing_reblogs?(user, target),
       endorsed: false
     }
@@ -72,6 +72,13 @@ defmodule Pleroma.Web.MastodonAPI.AccountView do
     image = User.avatar_url(user) |> MediaProxy.url()
     header = User.banner_url(user) |> MediaProxy.url()
     user_info = User.get_cached_user_info(user)
+
+    following_count =
+      ((!user.info.hide_follows or opts[:for] == user) && user_info.following_count) || 0
+
+    followers_count =
+      ((!user.info.hide_followers or opts[:for] == user) && user_info.follower_count) || 0
+
     bot = (user.info.source_data["type"] || "Person") in ["Application", "Service"]
 
     emojis =
@@ -87,12 +94,18 @@ defmodule Pleroma.Web.MastodonAPI.AccountView do
       end)
 
     fields =
-      (user.info.source_data["attachment"] || [])
-      |> Enum.filter(fn %{"type" => t} -> t == "PropertyValue" end)
-      |> Enum.map(fn fields -> Map.take(fields, ["name", "value"]) end)
+      user.info
+      |> User.Info.fields()
+      |> Enum.map(fn %{"name" => name, "value" => value} ->
+        %{
+          "name" => Pleroma.HTML.strip_tags(name),
+          "value" => Pleroma.HTML.filter_tags(value, Pleroma.HTML.Scrubber.LinksOnly)
+        }
+      end)
 
-    bio = HTML.filter_tags(user.bio, User.html_filter_policy(opts[:for]))
+    raw_fields = Map.get(user.info, :raw_fields, [])
 
+    bio = HTML.filter_tags(user.bio, User.html_filter_policy(opts[:for]))
     relationship = render("relationship.json", %{user: opts[:for], target: user})
 
     %{
@@ -102,11 +115,11 @@ defmodule Pleroma.Web.MastodonAPI.AccountView do
       display_name: display_name,
       locked: user_info.locked,
       created_at: Utils.to_masto_date(user.inserted_at),
-      followers_count: user_info.follower_count,
-      following_count: user_info.following_count,
+      followers_count: followers_count,
+      following_count: following_count,
       statuses_count: user_info.note_count,
       note: bio || "",
-      url: user.ap_id,
+      url: User.profile_url(user),
       avatar: image,
       avatar_static: image,
       header: header,
@@ -117,6 +130,7 @@ defmodule Pleroma.Web.MastodonAPI.AccountView do
       source: %{
         note: HTML.strip_tags((user.bio || "") |> String.replace("<br>", "\n")),
         sensitive: false,
+        fields: raw_fields,
         pleroma: %{}
       },
 
diff --git a/lib/pleroma/web/mastodon_api/views/conversation_view.ex b/lib/pleroma/web/mastodon_api/views/conversation_view.ex
index 38bdec737..40acc07b3 100644
--- a/lib/pleroma/web/mastodon_api/views/conversation_view.ex
+++ b/lib/pleroma/web/mastodon_api/views/conversation_view.ex
@@ -11,8 +11,8 @@ defmodule Pleroma.Web.MastodonAPI.ConversationView do
   alias Pleroma.Web.MastodonAPI.AccountView
   alias Pleroma.Web.MastodonAPI.StatusView
 
-  def render("participation.json", %{participation: participation, user: user}) do
-    participation = Repo.preload(participation, conversation: :users)
+  def render("participation.json", %{participation: participation, for: user}) do
+    participation = Repo.preload(participation, conversation: [], recipients: [])
 
     last_activity_id =
       with nil <- participation.last_activity_id do
@@ -28,7 +28,7 @@ defmodule Pleroma.Web.MastodonAPI.ConversationView do
 
     # Conversations return all users except the current user.
     users =
-      participation.conversation.users
+      participation.recipients
       |> Enum.reject(&(&1.id == user.id))
 
     accounts =
diff --git a/lib/pleroma/web/mastodon_api/views/status_view.ex b/lib/pleroma/web/mastodon_api/views/status_view.ex
index 7264dcafb..a4ee0b5dd 100644
--- a/lib/pleroma/web/mastodon_api/views/status_view.ex
+++ b/lib/pleroma/web/mastodon_api/views/status_view.ex
@@ -5,8 +5,12 @@
 defmodule Pleroma.Web.MastodonAPI.StatusView do
   use Pleroma.Web, :view
 
+  require Pleroma.Constants
+
   alias Pleroma.Activity
   alias Pleroma.ActivityExpiration
+  alias Pleroma.Conversation
+  alias Pleroma.Conversation.Participation
   alias Pleroma.HTML
   alias Pleroma.Object
   alias Pleroma.Repo
@@ -25,19 +29,19 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do
   defp get_replied_to_activities(activities) do
     activities
     |> Enum.map(fn
-      %{data: %{"type" => "Create", "object" => object}} ->
-        object = Object.normalize(object)
-        object.data["inReplyTo"] != "" && object.data["inReplyTo"]
+      %{data: %{"type" => "Create"}} = activity ->
+        object = Object.normalize(activity)
+        object && object.data["inReplyTo"] != "" && object.data["inReplyTo"]
 
       _ ->
         nil
     end)
     |> Enum.filter(& &1)
-    |> Activity.create_by_object_ap_id()
+    |> Activity.create_by_object_ap_id_with_object()
     |> Repo.all()
     |> Enum.reduce(%{}, fn activity, acc ->
       object = Object.normalize(activity)
-      Map.put(acc, object.data["id"], activity)
+      if object, do: Map.put(acc, object.data["id"], activity), else: acc
     end)
   end
 
@@ -69,12 +73,14 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do
 
   def render("index.json", opts) do
     replied_to_activities = get_replied_to_activities(opts.activities)
+    parallel = unless is_nil(opts[:parallel]), do: opts[:parallel], else: true
 
     opts.activities
     |> safe_render_many(
       StatusView,
       "status.json",
-      Map.put(opts, :replied_to_activities, replied_to_activities)
+      Map.put(opts, :replied_to_activities, replied_to_activities),
+      parallel
     )
   end
 
@@ -89,6 +95,7 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do
     reblogged_activity =
       Activity.create_by_object_ap_id(activity_object.data["id"])
       |> Activity.with_preloaded_bookmark(opts[:for])
+      |> Activity.with_set_thread_muted_field(opts[:for])
       |> Repo.one()
 
     reblogged = render("status.json", Map.put(opts, :activity, reblogged_activity))
@@ -143,6 +150,7 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do
     object = Object.normalize(activity)
 
     user = get_user(activity.data["actor"])
+    user_follower_address = user.follower_address
 
     like_count = object.data["like_count"] || 0
     announcement_count = object.data["announcement_count"] || 0
@@ -158,7 +166,11 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do
     mentions =
       (object.data["to"] ++ tag_mentions)
       |> Enum.uniq()
-      |> Enum.map(fn ap_id -> User.get_cached_by_ap_id(ap_id) end)
+      |> Enum.map(fn
+        Pleroma.Constants.as_public() -> nil
+        ^user_follower_address -> nil
+        ap_id -> User.get_cached_by_ap_id(ap_id)
+      end)
       |> Enum.filter(& &1)
       |> Enum.map(fn user -> AccountView.render("mention.json", %{user: user}) end)
 
@@ -178,7 +190,7 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do
     thread_muted? =
       case activity.thread_muted? do
         thread_muted? when is_boolean(thread_muted?) -> thread_muted?
-        nil -> CommonAPI.thread_muted?(user, activity)
+        nil -> (opts[:for] && CommonAPI.thread_muted?(opts[:for], activity)) || false
       end
 
     attachment_data = object.data["attachment"] || []
@@ -232,7 +244,20 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do
       if user.local do
         Pleroma.Web.Router.Helpers.o_status_url(Pleroma.Web.Endpoint, :notice, activity)
       else
-        object.data["external_url"] || object.data["id"]
+        object.data["url"] || object.data["external_url"] || object.data["id"]
+      end
+
+    direct_conversation_id =
+      with {_, true} <- {:include_id, opts[:with_direct_conversation_id]},
+           {_, %User{} = for_user} <- {:for_user, opts[:for]},
+           %{data: %{"context" => context}} when is_binary(context) <- activity,
+           %Conversation{} = conversation <- Conversation.get_for_ap_id(context),
+           %Participation{id: participation_id} <-
+             Participation.for_user_and_conversation(for_user, conversation) do
+        participation_id
+      else
+        _e ->
+          nil
       end
 
     %{
@@ -273,7 +298,8 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do
         in_reply_to_account_acct: reply_to_user && reply_to_user.nickname,
         content: %{"text/plain" => content_plaintext},
         spoiler_text: %{"text/plain" => summary_plaintext},
-        expires_at: expires_at
+        expires_at: expires_at,
+        direct_conversation_id: direct_conversation_id
       }
     }
   end
diff --git a/lib/pleroma/web/media_proxy/media_proxy.ex b/lib/pleroma/web/media_proxy/media_proxy.ex
index a661e9bb7..1725ab071 100644
--- a/lib/pleroma/web/media_proxy/media_proxy.ex
+++ b/lib/pleroma/web/media_proxy/media_proxy.ex
@@ -4,6 +4,7 @@
 
 defmodule Pleroma.Web.MediaProxy do
   alias Pleroma.Config
+  alias Pleroma.Upload
   alias Pleroma.Web
 
   @base64_opts [padding: false]
@@ -26,7 +27,18 @@ defmodule Pleroma.Web.MediaProxy do
   defp whitelisted?(url) do
     %{host: domain} = URI.parse(url)
 
-    Enum.any?(Config.get([:media_proxy, :whitelist]), fn pattern ->
+    mediaproxy_whitelist = Config.get([:media_proxy, :whitelist])
+
+    upload_base_url_domain =
+      if !is_nil(Config.get([Upload, :base_url])) do
+        [URI.parse(Config.get([Upload, :base_url])).host]
+      else
+        []
+      end
+
+    whitelist = mediaproxy_whitelist ++ upload_base_url_domain
+
+    Enum.any?(whitelist, fn pattern ->
       String.equivalent?(domain, pattern)
     end)
   end
diff --git a/lib/pleroma/web/nodeinfo/nodeinfo_controller.ex b/lib/pleroma/web/nodeinfo/nodeinfo_controller.ex
index a1d7fcc7d..ee14cfd6b 100644
--- a/lib/pleroma/web/nodeinfo/nodeinfo_controller.ex
+++ b/lib/pleroma/web/nodeinfo/nodeinfo_controller.ex
@@ -34,64 +34,18 @@ defmodule Pleroma.Web.Nodeinfo.NodeinfoController do
   def raw_nodeinfo do
     stats = Stats.get_stats()
 
-    exclusions = Config.get([:instance, :mrf_transparency_exclusions])
-
-    mrf_simple =
-      Config.get(:mrf_simple)
-      |> Enum.map(fn {k, v} -> {k, Enum.reject(v, fn v -> v in exclusions end)} end)
-      |> Enum.into(%{})
-
-    # This horror is needed to convert regex sigils to strings
-    mrf_keyword =
-      Config.get(:mrf_keyword, [])
-      |> Enum.map(fn {key, value} ->
-        {key,
-         Enum.map(value, fn
-           {pattern, replacement} ->
-             %{
-               "pattern" =>
-                 if not is_binary(pattern) do
-                   inspect(pattern)
-                 else
-                   pattern
-                 end,
-               "replacement" => replacement
-             }
-
-           pattern ->
-             if not is_binary(pattern) do
-               inspect(pattern)
-             else
-               pattern
-             end
-         end)}
-      end)
-      |> Enum.into(%{})
-
-    mrf_policies =
-      MRF.get_policies()
-      |> Enum.map(fn policy -> to_string(policy) |> String.split(".") |> List.last() end)
-
     quarantined = Config.get([:instance, :quarantined_instances], [])
 
     staff_accounts =
       User.all_superusers()
       |> Enum.map(fn u -> u.ap_id end)
 
-    mrf_user_allowlist =
-      Config.get([:mrf_user_allowlist], [])
-      |> Enum.into(%{}, fn {k, v} -> {k, length(v)} end)
-
     federation_response =
       if Config.get([:instance, :mrf_transparency]) do
-        %{
-          mrf_policies: mrf_policies,
-          mrf_simple: mrf_simple,
-          mrf_keyword: mrf_keyword,
-          mrf_user_allowlist: mrf_user_allowlist,
-          quarantined_instances: quarantined,
-          exclusions: length(exclusions) > 0
-        }
+        {:ok, data} = MRF.describe()
+
+        data
+        |> Map.merge(%{quarantined_instances: quarantined})
       else
         %{}
       end
@@ -165,6 +119,7 @@ defmodule Pleroma.Web.Nodeinfo.NodeinfoController do
         },
         accountActivationRequired: Config.get([:instance, :account_activation_required], false),
         invitesEnabled: Config.get([:instance, :invites_enabled], false),
+        mailerEnabled: Config.get([Pleroma.Emails.Mailer, :enabled], false),
         features: features,
         restrictedNicknames: Config.get([Pleroma.User, :restricted_nicknames]),
         skipThreadContainment: Config.get([:instance, :skip_thread_containment], false)
diff --git a/lib/pleroma/web/oauth/oauth_controller.ex b/lib/pleroma/web/oauth/oauth_controller.ex
index ef53b7ae3..81eae2c8b 100644
--- a/lib/pleroma/web/oauth/oauth_controller.ex
+++ b/lib/pleroma/web/oauth/oauth_controller.ex
@@ -365,8 +365,7 @@ defmodule Pleroma.Web.OAuth.OAuthController do
   def register(%Plug.Conn{} = conn, %{"authorization" => _, "op" => "connect"} = params) do
     with registration_id when not is_nil(registration_id) <- get_session_registration_id(conn),
          %Registration{} = registration <- Repo.get(Registration, registration_id),
-         {_, {:ok, auth}} <-
-           {:create_authorization, do_create_authorization(conn, params)},
+         {_, {:ok, auth}} <- {:create_authorization, do_create_authorization(conn, params)},
          %User{} = user <- Repo.preload(auth, :user).user,
          {:ok, _updated_registration} <- Registration.bind_to_user(registration, user) do
       conn
diff --git a/lib/pleroma/web/oauth/token.ex b/lib/pleroma/web/oauth/token.ex
index 90c304487..40f131b57 100644
--- a/lib/pleroma/web/oauth/token.ex
+++ b/lib/pleroma/web/oauth/token.ex
@@ -44,8 +44,7 @@ defmodule Pleroma.Web.OAuth.Token do
     |> Repo.find_resource()
   end
 
-  @spec exchange_token(App.t(), Authorization.t()) ::
-          {:ok, Token.t()} | {:error, Changeset.t()}
+  @spec exchange_token(App.t(), Authorization.t()) :: {:ok, Token.t()} | {:error, Changeset.t()}
   def exchange_token(app, auth) do
     with {:ok, auth} <- Authorization.use_token(auth),
          true <- auth.app_id == app.id do
diff --git a/lib/pleroma/web/oauth/token/clean_worker.ex b/lib/pleroma/web/oauth/token/clean_worker.ex
index dca852449..f50098302 100644
--- a/lib/pleroma/web/oauth/token/clean_worker.ex
+++ b/lib/pleroma/web/oauth/token/clean_worker.ex
@@ -6,36 +6,30 @@ defmodule Pleroma.Web.OAuth.Token.CleanWorker do
   @moduledoc """
   The module represents functions to clean an expired oauth tokens.
   """
+  use GenServer
+
+  @ten_seconds 10_000
+  @one_day 86_400_000
 
-  # 10 seconds
-  @start_interval 10_000
   @interval Pleroma.Config.get(
-              # 24 hours
               [:oauth2, :clean_expired_tokens_interval],
-              86_400_000
+              @one_day
             )
-  @queue :background
 
   alias Pleroma.Web.OAuth.Token
 
-  def start_link, do: GenServer.start_link(__MODULE__, nil)
+  def start_link(_), do: GenServer.start_link(__MODULE__, %{})
 
   def init(_) do
-    if Pleroma.Config.get([:oauth2, :clean_expired_tokens], false) do
-      Process.send_after(self(), :perform, @start_interval)
-      {:ok, nil}
-    else
-      :ignore
-    end
+    Process.send_after(self(), :perform, @ten_seconds)
+    {:ok, nil}
   end
 
   @doc false
   def handle_info(:perform, state) do
+    Token.delete_expired_tokens()
+
     Process.send_after(self(), :perform, @interval)
-    PleromaJobQueue.enqueue(@queue, __MODULE__, [:clean])
     {:noreply, state}
   end
-
-  # Job Worker Callbacks
-  def perform(:clean), do: Token.delete_expired_tokens()
 end
diff --git a/lib/pleroma/web/ostatus/activity_representer.ex b/lib/pleroma/web/ostatus/activity_representer.ex
index 95037125d..8e55b9f0b 100644
--- a/lib/pleroma/web/ostatus/activity_representer.ex
+++ b/lib/pleroma/web/ostatus/activity_representer.ex
@@ -9,6 +9,7 @@ defmodule Pleroma.Web.OStatus.ActivityRepresenter do
   alias Pleroma.Web.OStatus.UserRepresenter
 
   require Logger
+  require Pleroma.Constants
 
   defp get_href(id) do
     with %Object{data: %{"external_url" => external_url}} <- Object.get_cached_by_ap_id(id) do
@@ -34,7 +35,7 @@ defmodule Pleroma.Web.OStatus.ActivityRepresenter do
     Enum.map(to, fn id ->
       cond do
         # Special handling for the AP/Ostatus public collections
-        "https://www.w3.org/ns/activitystreams#Public" == id ->
+        Pleroma.Constants.as_public() == id ->
           {:link,
            [
              rel: "mentioned",
@@ -182,6 +183,7 @@ defmodule Pleroma.Web.OStatus.ActivityRepresenter do
     author = if with_author, do: [{:author, UserRepresenter.to_simple_form(user)}], else: []
 
     retweeted_activity = Activity.get_create_by_object_ap_id(activity.data["object"])
+    retweeted_object = Object.normalize(retweeted_activity)
     retweeted_user = User.get_cached_by_ap_id(retweeted_activity.data["actor"])
 
     retweeted_xml = to_simple_form(retweeted_activity, retweeted_user, true)
@@ -196,7 +198,7 @@ defmodule Pleroma.Web.OStatus.ActivityRepresenter do
       {:"activity:verb", ['http://activitystrea.ms/schema/1.0/share']},
       {:id, h.(activity.data["id"])},
       {:title, ['#{user.nickname} repeated a notice']},
-      {:content, [type: 'html'], ['RT #{retweeted_activity.data["object"]["content"]}']},
+      {:content, [type: 'html'], ['RT #{retweeted_object.data["content"]}']},
       {:published, h.(inserted_at)},
       {:updated, h.(updated_at)},
       {:"ostatus:conversation", [ref: h.(activity.data["context"])],
diff --git a/lib/pleroma/web/ostatus/handlers/follow_handler.ex b/lib/pleroma/web/ostatus/handlers/follow_handler.ex
index 263d3b2dc..24513972e 100644
--- a/lib/pleroma/web/ostatus/handlers/follow_handler.ex
+++ b/lib/pleroma/web/ostatus/handlers/follow_handler.ex
@@ -9,14 +9,18 @@ defmodule Pleroma.Web.OStatus.FollowHandler do
   alias Pleroma.Web.XML
 
   def handle(entry, doc) do
-    with {:ok, actor} <- OStatus.find_make_or_update_user(doc),
+    with {:ok, actor} <- OStatus.find_make_or_update_actor(doc),
          id when not is_nil(id) <- XML.string_from_xpath("/entry/id", entry),
          followed_uri when not is_nil(followed_uri) <-
            XML.string_from_xpath("/entry/activity:object/id", entry),
          {:ok, followed} <- OStatus.find_or_make_user(followed_uri),
+         {:locked, false} <- {:locked, followed.info.locked},
          {:ok, activity} <- ActivityPub.follow(actor, followed, id, false) do
       User.follow(actor, followed)
       {:ok, activity}
+    else
+      {:locked, true} ->
+        {:error, "It's not possible to follow locked accounts over OStatus"}
     end
   end
 end
diff --git a/lib/pleroma/web/ostatus/handlers/note_handler.ex b/lib/pleroma/web/ostatus/handlers/note_handler.ex
index 8e0adad91..7fae14f7b 100644
--- a/lib/pleroma/web/ostatus/handlers/note_handler.ex
+++ b/lib/pleroma/web/ostatus/handlers/note_handler.ex
@@ -4,6 +4,7 @@
 
 defmodule Pleroma.Web.OStatus.NoteHandler do
   require Logger
+  require Pleroma.Constants
 
   alias Pleroma.Activity
   alias Pleroma.Object
@@ -49,7 +50,7 @@ defmodule Pleroma.Web.OStatus.NoteHandler do
   def get_collection_mentions(entry) do
     transmogrify = fn
       "http://activityschema.org/collection/public" ->
-        "https://www.w3.org/ns/activitystreams#Public"
+        Pleroma.Constants.as_public()
 
       group ->
         group
@@ -110,7 +111,7 @@ defmodule Pleroma.Web.OStatus.NoteHandler do
     with id <- XML.string_from_xpath("//id", entry),
          activity when is_nil(activity) <- Activity.get_create_by_object_ap_id_with_object(id),
          [author] <- :xmerl_xpath.string('//author[1]', doc),
-         {:ok, actor} <- OStatus.find_make_or_update_user(author),
+         {:ok, actor} <- OStatus.find_make_or_update_actor(author),
          content_html <- OStatus.get_content(entry),
          cw <- OStatus.get_cw(entry),
          in_reply_to <- XML.string_from_xpath("//thr:in-reply-to[1]/@ref", entry),
@@ -126,7 +127,7 @@ defmodule Pleroma.Web.OStatus.NoteHandler do
          to <- make_to_list(actor, mentions),
          date <- XML.string_from_xpath("//published", entry),
          unlisted <- XML.string_from_xpath("//mastodon:scope", entry) == "unlisted",
-         cc <- if(unlisted, do: ["https://www.w3.org/ns/activitystreams#Public"], else: []),
+         cc <- if(unlisted, do: [Pleroma.Constants.as_public()], else: []),
          note <-
            CommonAPI.Utils.make_note_data(
              actor.ap_id,
diff --git a/lib/pleroma/web/ostatus/handlers/unfollow_handler.ex b/lib/pleroma/web/ostatus/handlers/unfollow_handler.ex
index 6596ada3b..2062432e3 100644
--- a/lib/pleroma/web/ostatus/handlers/unfollow_handler.ex
+++ b/lib/pleroma/web/ostatus/handlers/unfollow_handler.ex
@@ -9,7 +9,7 @@ defmodule Pleroma.Web.OStatus.UnfollowHandler do
   alias Pleroma.Web.XML
 
   def handle(entry, doc) do
-    with {:ok, actor} <- OStatus.find_make_or_update_user(doc),
+    with {:ok, actor} <- OStatus.find_make_or_update_actor(doc),
          id when not is_nil(id) <- XML.string_from_xpath("/entry/id", entry),
          followed_uri when not is_nil(followed_uri) <-
            XML.string_from_xpath("/entry/activity:object/id", entry),
diff --git a/lib/pleroma/web/ostatus/ostatus.ex b/lib/pleroma/web/ostatus/ostatus.ex
index 502410c83..331cbc0b7 100644
--- a/lib/pleroma/web/ostatus/ostatus.ex
+++ b/lib/pleroma/web/ostatus/ostatus.ex
@@ -56,7 +56,7 @@ defmodule Pleroma.Web.OStatus do
 
   def handle_incoming(xml_string, options \\ []) do
     with doc when doc != :error <- parse_document(xml_string) do
-      with {:ok, actor_user} <- find_make_or_update_user(doc),
+      with {:ok, actor_user} <- find_make_or_update_actor(doc),
            do: Pleroma.Instances.set_reachable(actor_user.ap_id)
 
       entries = :xmerl_xpath.string('//entry', doc)
@@ -120,7 +120,7 @@ defmodule Pleroma.Web.OStatus do
   end
 
   def make_share(entry, doc, retweeted_activity) do
-    with {:ok, actor} <- find_make_or_update_user(doc),
+    with {:ok, actor} <- find_make_or_update_actor(doc),
          %Object{} = object <- Object.normalize(retweeted_activity),
          id when not is_nil(id) <- string_from_xpath("/entry/id", entry),
          {:ok, activity, _object} = ActivityPub.announce(actor, object, id, false) do
@@ -138,7 +138,7 @@ defmodule Pleroma.Web.OStatus do
   end
 
   def make_favorite(entry, doc, favorited_activity) do
-    with {:ok, actor} <- find_make_or_update_user(doc),
+    with {:ok, actor} <- find_make_or_update_actor(doc),
          %Object{} = object <- Object.normalize(favorited_activity),
          id when not is_nil(id) <- string_from_xpath("/entry/id", entry),
          {:ok, activity, _object} = ActivityPub.like(actor, object, id, false) do
@@ -264,11 +264,18 @@ defmodule Pleroma.Web.OStatus do
     end
   end
 
-  def find_make_or_update_user(doc) do
+  def find_make_or_update_actor(doc) do
     uri = string_from_xpath("//author/uri[1]", doc)
 
-    with {:ok, user} <- find_or_make_user(uri) do
+    with {:ok, %User{} = user} <- find_or_make_user(uri),
+         {:ap_enabled, false} <- {:ap_enabled, User.ap_enabled?(user)} do
       maybe_update(doc, user)
+    else
+      {:ap_enabled, true} ->
+        {:error, :invalid_protocol}
+
+      _ ->
+        {:error, :unknown_user}
     end
   end
 
diff --git a/lib/pleroma/web/ostatus/ostatus_controller.ex b/lib/pleroma/web/ostatus/ostatus_controller.ex
index 372d52899..fdba0f77f 100644
--- a/lib/pleroma/web/ostatus/ostatus_controller.ex
+++ b/lib/pleroma/web/ostatus/ostatus_controller.ex
@@ -5,6 +5,7 @@
 defmodule Pleroma.Web.OStatus.OStatusController do
   use Pleroma.Web, :controller
 
+  alias Fallback.RedirectController
   alias Pleroma.Activity
   alias Pleroma.Object
   alias Pleroma.User
@@ -12,42 +13,49 @@ defmodule Pleroma.Web.OStatus.OStatusController do
   alias Pleroma.Web.ActivityPub.ActivityPubController
   alias Pleroma.Web.ActivityPub.ObjectView
   alias Pleroma.Web.ActivityPub.Visibility
+  alias Pleroma.Web.Endpoint
   alias Pleroma.Web.Federator
+  alias Pleroma.Web.Metadata.PlayerView
   alias Pleroma.Web.OStatus
   alias Pleroma.Web.OStatus.ActivityRepresenter
   alias Pleroma.Web.OStatus.FeedRepresenter
+  alias Pleroma.Web.Router
   alias Pleroma.Web.XML
 
+  plug(
+    Pleroma.Plugs.RateLimiter,
+    {:ap_routes, params: ["uuid"]} when action in [:object, :activity]
+  )
+
   plug(Pleroma.Web.FederatingPlug when action in [:salmon_incoming])
 
-  action_fallback(:errors)
+  plug(
+    Pleroma.Plugs.SetFormatPlug
+    when action in [:feed_redirect, :object, :activity, :notice]
+  )
 
-  def feed_redirect(conn, %{"nickname" => nickname}) do
-    case get_format(conn) do
-      "html" ->
-        with %User{} = user <- User.get_cached_by_nickname_or_id(nickname) do
-          Fallback.RedirectController.redirector_with_meta(conn, %{user: user})
-        else
-          nil -> {:error, :not_found}
-        end
+  action_fallback(:errors)
 
-      "activity+json" ->
-        ActivityPubController.call(conn, :user)
+  def feed_redirect(%{assigns: %{format: "html"}} = conn, %{"nickname" => nickname}) do
+    with {_, %User{} = user} <-
+           {:fetch_user, User.get_cached_by_nickname_or_id(nickname)} do
+      RedirectController.redirector_with_meta(conn, %{user: user})
+    end
+  end
 
-      "json" ->
-        ActivityPubController.call(conn, :user)
+  def feed_redirect(%{assigns: %{format: format}} = conn, _params)
+      when format in ["json", "activity+json"] do
+    ActivityPubController.call(conn, :user)
+  end
 
-      _ ->
-        with %User{} = user <- User.get_cached_by_nickname(nickname) do
-          redirect(conn, external: OStatus.feed_path(user))
-        else
-          nil -> {:error, :not_found}
-        end
+  def feed_redirect(conn, %{"nickname" => nickname}) do
+    with {_, %User{} = user} <- {:fetch_user, User.get_cached_by_nickname(nickname)} do
+      redirect(conn, external: OStatus.feed_path(user))
     end
   end
 
   def feed(conn, %{"nickname" => nickname} = params) do
-    with %User{} = user <- User.get_cached_by_nickname(nickname) do
+    with {_, %User{} = user} <- {:fetch_user, User.get_cached_by_nickname(nickname)} do
       query_params =
         Map.take(params, ["max_id"])
         |> Map.merge(%{"whole_db" => true, "actor_id" => user.ap_id})
@@ -65,8 +73,6 @@ defmodule Pleroma.Web.OStatus.OStatusController do
       conn
       |> put_resp_content_type("application/atom+xml")
       |> send_resp(200, response)
-    else
-      nil -> {:error, :not_found}
     end
   end
 
@@ -97,93 +103,82 @@ defmodule Pleroma.Web.OStatus.OStatusController do
     |> send_resp(200, "")
   end
 
-  def object(conn, %{"uuid" => uuid}) do
-    if get_format(conn) in ["activity+json", "json"] do
-      ActivityPubController.call(conn, :object)
-    else
-      with id <- o_status_url(conn, :object, uuid),
-           {_, %Activity{} = activity} <-
-             {:activity, Activity.get_create_by_object_ap_id_with_object(id)},
-           {_, true} <- {:public?, Visibility.is_public?(activity)},
-           %User{} = user <- User.get_cached_by_ap_id(activity.data["actor"]) do
-        case get_format(conn) do
-          "html" -> redirect(conn, to: "/notice/#{activity.id}")
-          _ -> represent_activity(conn, nil, activity, user)
-        end
-      else
-        {:public?, false} ->
-          {:error, :not_found}
-
-        {:activity, nil} ->
-          {:error, :not_found}
+  def object(%{assigns: %{format: format}} = conn, %{"uuid" => _uuid})
+      when format in ["json", "activity+json"] do
+    ActivityPubController.call(conn, :object)
+  end
 
-        e ->
-          e
+  def object(%{assigns: %{format: format}} = conn, %{"uuid" => uuid}) do
+    with id <- o_status_url(conn, :object, uuid),
+         {_, %Activity{} = activity} <-
+           {:activity, Activity.get_create_by_object_ap_id_with_object(id)},
+         {_, true} <- {:public?, Visibility.is_public?(activity)},
+         %User{} = user <- User.get_cached_by_ap_id(activity.data["actor"]) do
+      case format do
+        "html" -> redirect(conn, to: "/notice/#{activity.id}")
+        _ -> represent_activity(conn, nil, activity, user)
       end
+    else
+      reason when reason in [{:public?, false}, {:activity, nil}] ->
+        {:error, :not_found}
+
+      e ->
+        e
     end
   end
 
-  def activity(conn, %{"uuid" => uuid}) do
-    if get_format(conn) in ["activity+json", "json"] do
-      ActivityPubController.call(conn, :activity)
-    else
-      with id <- o_status_url(conn, :activity, uuid),
-           {_, %Activity{} = activity} <- {:activity, Activity.normalize(id)},
-           {_, true} <- {:public?, Visibility.is_public?(activity)},
-           %User{} = user <- User.get_cached_by_ap_id(activity.data["actor"]) do
-        case format = get_format(conn) do
-          "html" -> redirect(conn, to: "/notice/#{activity.id}")
-          _ -> represent_activity(conn, format, activity, user)
-        end
-      else
-        {:public?, false} ->
-          {:error, :not_found}
-
-        {:activity, nil} ->
-          {:error, :not_found}
+  def activity(%{assigns: %{format: format}} = conn, %{"uuid" => _uuid})
+      when format in ["json", "activity+json"] do
+    ActivityPubController.call(conn, :activity)
+  end
 
-        e ->
-          e
+  def activity(%{assigns: %{format: format}} = conn, %{"uuid" => uuid}) do
+    with id <- o_status_url(conn, :activity, uuid),
+         {_, %Activity{} = activity} <- {:activity, Activity.normalize(id)},
+         {_, true} <- {:public?, Visibility.is_public?(activity)},
+         %User{} = user <- User.get_cached_by_ap_id(activity.data["actor"]) do
+      case format do
+        "html" -> redirect(conn, to: "/notice/#{activity.id}")
+        _ -> represent_activity(conn, format, activity, user)
       end
+    else
+      reason when reason in [{:public?, false}, {:activity, nil}] ->
+        {:error, :not_found}
+
+      e ->
+        e
     end
   end
 
-  def notice(conn, %{"id" => id}) do
+  def notice(%{assigns: %{format: format}} = conn, %{"id" => id}) do
     with {_, %Activity{} = activity} <- {:activity, Activity.get_by_id_with_object(id)},
          {_, true} <- {:public?, Visibility.is_public?(activity)},
          %User{} = user <- User.get_cached_by_ap_id(activity.data["actor"]) do
-      case format = get_format(conn) do
-        "html" ->
-          if activity.data["type"] == "Create" do
-            %Object{} = object = Object.normalize(activity)
+      cond do
+        format == "html" && activity.data["type"] == "Create" ->
+          %Object{} = object = Object.normalize(activity)
 
-            Fallback.RedirectController.redirector_with_meta(conn, %{
+          RedirectController.redirector_with_meta(
+            conn,
+            %{
               activity_id: activity.id,
               object: object,
-              url:
-                Pleroma.Web.Router.Helpers.o_status_url(
-                  Pleroma.Web.Endpoint,
-                  :notice,
-                  activity.id
-                ),
+              url: Router.Helpers.o_status_url(Endpoint, :notice, activity.id),
               user: user
-            })
-          else
-            Fallback.RedirectController.redirector(conn, nil)
-          end
+            }
+          )
 
-        _ ->
+        format == "html" ->
+          RedirectController.redirector(conn, nil)
+
+        true ->
           represent_activity(conn, format, activity, user)
       end
     else
-      {:public?, false} ->
+      reason when reason in [{:public?, false}, {:activity, nil}] ->
         conn
         |> put_status(404)
-        |> Fallback.RedirectController.redirector(nil, 404)
-
-      {:activity, nil} ->
-        conn
-        |> Fallback.RedirectController.redirector(nil, 404)
+        |> RedirectController.redirector(nil, 404)
 
       e ->
         e
@@ -204,13 +199,13 @@ defmodule Pleroma.Web.OStatus.OStatusController do
         "content-security-policy",
         "default-src 'none';style-src 'self' 'unsafe-inline';img-src 'self' data: https:; media-src 'self' https:;"
       )
-      |> put_view(Pleroma.Web.Metadata.PlayerView)
+      |> put_view(PlayerView)
       |> render("player.html", url)
     else
       _error ->
         conn
         |> put_status(404)
-        |> Fallback.RedirectController.redirector(nil, 404)
+        |> RedirectController.redirector(nil, 404)
     end
   end
 
@@ -248,6 +243,8 @@ defmodule Pleroma.Web.OStatus.OStatusController do
     render_error(conn, :not_found, "Not found")
   end
 
+  def errors(conn, {:fetch_user, nil}), do: errors(conn, {:error, :not_found})
+
   def errors(conn, _) do
     render_error(conn, :internal_server_error, "Something went wrong")
   end
diff --git a/lib/pleroma/web/pleroma_api/pleroma_api_controller.ex b/lib/pleroma/web/pleroma_api/pleroma_api_controller.ex
new file mode 100644
index 000000000..b6d2bf86b
--- /dev/null
+++ b/lib/pleroma/web/pleroma_api/pleroma_api_controller.ex
@@ -0,0 +1,73 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Web.PleromaAPI.PleromaAPIController do
+  use Pleroma.Web, :controller
+
+  import Pleroma.Web.ControllerHelper, only: [add_link_headers: 7]
+
+  alias Pleroma.Conversation.Participation
+  alias Pleroma.Web.ActivityPub.ActivityPub
+  alias Pleroma.Web.MastodonAPI.ConversationView
+  alias Pleroma.Web.MastodonAPI.StatusView
+
+  def conversation(%{assigns: %{user: user}} = conn, %{"id" => participation_id}) do
+    with %Participation{} = participation <- Participation.get(participation_id),
+         true <- user.id == participation.user_id do
+      conn
+      |> put_view(ConversationView)
+      |> render("participation.json", %{participation: participation, for: user})
+    end
+  end
+
+  def conversation_statuses(
+        %{assigns: %{user: user}} = conn,
+        %{"id" => participation_id} = params
+      ) do
+    params =
+      params
+      |> Map.put("blocking_user", user)
+      |> Map.put("muting_user", user)
+      |> Map.put("user", user)
+
+    participation =
+      participation_id
+      |> Participation.get(preload: [:conversation])
+
+    if user.id == participation.user_id do
+      activities =
+        participation.conversation.ap_id
+        |> ActivityPub.fetch_activities_for_context(params)
+        |> Enum.reverse()
+
+      conn
+      |> add_link_headers(
+        :conversation_statuses,
+        activities,
+        participation_id,
+        params,
+        nil,
+        &pleroma_api_url/4
+      )
+      |> put_view(StatusView)
+      |> render("index.json", %{activities: activities, for: user, as: :activity})
+    end
+  end
+
+  def update_conversation(
+        %{assigns: %{user: user}} = conn,
+        %{"id" => participation_id, "recipients" => recipients}
+      ) do
+    participation =
+      participation_id
+      |> Participation.get()
+
+    with true <- user.id == participation.user_id,
+         {:ok, participation} <- Participation.set_recipients(participation, recipients) do
+      conn
+      |> put_view(ConversationView)
+      |> render("participation.json", %{participation: participation, for: user})
+    end
+  end
+end
diff --git a/lib/pleroma/web/rich_media/parsers/ttl/aws_signed_url.ex b/lib/pleroma/web/rich_media/parsers/ttl/aws_signed_url.ex
index 014c0935f..0dc1efdaf 100644
--- a/lib/pleroma/web/rich_media/parsers/ttl/aws_signed_url.ex
+++ b/lib/pleroma/web/rich_media/parsers/ttl/aws_signed_url.ex
@@ -19,8 +19,7 @@ defmodule Pleroma.Web.RichMedia.Parser.TTL.AwsSignedUrl do
   defp is_aws_signed_url(image) when is_binary(image) do
     %URI{host: host, query: query} = URI.parse(image)
 
-    if String.contains?(host, "amazonaws.com") and
-         String.contains?(query, "X-Amz-Expires") do
+    if String.contains?(host, "amazonaws.com") and String.contains?(query, "X-Amz-Expires") do
       image
     else
       nil
diff --git a/lib/pleroma/web/rich_media/parsers/twitter_card.ex b/lib/pleroma/web/rich_media/parsers/twitter_card.ex
index e4efe2dd0..afaa98f3d 100644
--- a/lib/pleroma/web/rich_media/parsers/twitter_card.ex
+++ b/lib/pleroma/web/rich_media/parsers/twitter_card.ex
@@ -3,13 +3,20 @@
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.RichMedia.Parsers.TwitterCard do
+  alias Pleroma.Web.RichMedia.Parsers.MetaTagsParser
+
+  @spec parse(String.t(), map()) :: {:ok, map()} | {:error, String.t()}
   def parse(html, data) do
-    Pleroma.Web.RichMedia.Parsers.MetaTagsParser.parse(
-      html,
-      data,
-      "twitter",
-      "No twitter card metadata found",
-      "name"
-    )
+    data
+    |> parse_name_attrs(html)
+    |> parse_property_attrs(html)
+  end
+
+  defp parse_name_attrs(data, html) do
+    MetaTagsParser.parse(html, data, "twitter", %{}, "name")
+  end
+
+  defp parse_property_attrs({_, data}, html) do
+    MetaTagsParser.parse(html, data, "twitter", "No twitter card metadata found", "property")
   end
 end
diff --git a/lib/pleroma/web/router.ex b/lib/pleroma/web/router.ex
index a9f3826fc..1eb6f7b9d 100644
--- a/lib/pleroma/web/router.ex
+++ b/lib/pleroma/web/router.ex
@@ -196,6 +196,8 @@ defmodule Pleroma.Web.Router do
 
     get("/config", AdminAPIController, :config_show)
     post("/config", AdminAPIController, :config_update)
+    get("/config/migrate_to_db", AdminAPIController, :migrate_to_db)
+    get("/config/migrate_from_db", AdminAPIController, :migrate_from_db)
   end
 
   scope "/", Pleroma.Web.TwitterAPI do
@@ -257,6 +259,21 @@ defmodule Pleroma.Web.Router do
     end
   end
 
+  scope "/api/v1/pleroma", Pleroma.Web.PleromaAPI do
+    pipe_through(:authenticated_api)
+
+    scope [] do
+      pipe_through(:oauth_read)
+      get("/conversations/:id/statuses", PleromaAPIController, :conversation_statuses)
+      get("/conversations/:id", PleromaAPIController, :conversation)
+    end
+
+    scope [] do
+      pipe_through(:oauth_write)
+      patch("/conversations/:id", PleromaAPIController, :update_conversation)
+    end
+  end
+
   scope "/api/v1", Pleroma.Web.MastodonAPI do
     pipe_through(:authenticated_api)
 
@@ -412,6 +429,12 @@ defmodule Pleroma.Web.Router do
 
     get("/accounts/search", SearchController, :account_search)
 
+    post(
+      "/pleroma/accounts/confirmation_resend",
+      MastodonAPIController,
+      :account_confirmation_resend
+    )
+
     scope [] do
       pipe_through(:oauth_read_or_public)
 
@@ -600,6 +623,8 @@ defmodule Pleroma.Web.Router do
     post("/push/hub/:nickname", Websub.WebsubController, :websub_subscription_request)
     get("/push/subscriptions/:id", Websub.WebsubController, :websub_subscription_confirmation)
     post("/push/subscriptions/:id", Websub.WebsubController, :websub_incoming)
+
+    get("/mailer/unsubscribe/:token", Mailer.SubscriptionController, :unsubscribe)
   end
 
   pipeline :activitypub do
@@ -692,7 +717,7 @@ defmodule Pleroma.Web.Router do
     post("/auth/password", MastodonAPIController, :password_reset)
 
     scope [] do
-      pipe_through(:oauth_read_or_public)
+      pipe_through(:oauth_read)
       get("/web/*path", MastodonAPIController, :index)
     end
   end
@@ -729,68 +754,3 @@ defmodule Pleroma.Web.Router do
     options("/*path", RedirectController, :empty)
   end
 end
-
-defmodule Fallback.RedirectController do
-  use Pleroma.Web, :controller
-  require Logger
-  alias Pleroma.User
-  alias Pleroma.Web.Metadata
-
-  def api_not_implemented(conn, _params) do
-    conn
-    |> put_status(404)
-    |> json(%{error: "Not implemented"})
-  end
-
-  def redirector(conn, _params, code \\ 200) do
-    conn
-    |> put_resp_content_type("text/html")
-    |> send_file(code, index_file_path())
-  end
-
-  def redirector_with_meta(conn, %{"maybe_nickname_or_id" => maybe_nickname_or_id} = params) do
-    with %User{} = user <- User.get_cached_by_nickname_or_id(maybe_nickname_or_id) do
-      redirector_with_meta(conn, %{user: user})
-    else
-      nil ->
-        redirector(conn, params)
-    end
-  end
-
-  def redirector_with_meta(conn, params) do
-    {:ok, index_content} = File.read(index_file_path())
-
-    tags =
-      try do
-        Metadata.build_tags(params)
-      rescue
-        e ->
-          Logger.error(
-            "Metadata rendering for #{conn.request_path} failed.\n" <>
-              Exception.format(:error, e, __STACKTRACE__)
-          )
-
-          ""
-      end
-
-    response = String.replace(index_content, "<!--server-generated-meta-->", tags)
-
-    conn
-    |> put_resp_content_type("text/html")
-    |> send_resp(200, response)
-  end
-
-  def index_file_path do
-    Pleroma.Plugs.InstanceStatic.file_path("index.html")
-  end
-
-  def registration_page(conn, params) do
-    redirector(conn, params)
-  end
-
-  def empty(conn, _params) do
-    conn
-    |> put_status(204)
-    |> text("")
-  end
-end
diff --git a/lib/pleroma/web/streamer.ex b/lib/pleroma/web/streamer.ex
index 86e2dc4dd..587c43f40 100644
--- a/lib/pleroma/web/streamer.ex
+++ b/lib/pleroma/web/streamer.ex
@@ -18,7 +18,7 @@ defmodule Pleroma.Web.Streamer do
 
   @keepalive_interval :timer.seconds(30)
 
-  def start_link do
+  def start_link(_) do
     GenServer.start_link(__MODULE__, %{}, name: __MODULE__)
   end
 
@@ -35,28 +35,21 @@ defmodule Pleroma.Web.Streamer do
   end
 
   def init(args) do
-    spawn(fn ->
-      # 30 seconds
-      Process.sleep(@keepalive_interval)
-      GenServer.cast(__MODULE__, %{action: :ping})
-    end)
+    Process.send_after(self(), %{action: :ping}, @keepalive_interval)
 
     {:ok, args}
   end
 
-  def handle_cast(%{action: :ping}, topics) do
-    Map.values(topics)
+  def handle_info(%{action: :ping}, topics) do
+    topics
+    |> Map.values()
     |> List.flatten()
     |> Enum.each(fn socket ->
       Logger.debug("Sending keepalive ping")
       send(socket.transport_pid, {:text, ""})
     end)
 
-    spawn(fn ->
-      # 30 seconds
-      Process.sleep(@keepalive_interval)
-      GenServer.cast(__MODULE__, %{action: :ping})
-    end)
+    Process.send_after(self(), %{action: :ping}, @keepalive_interval)
 
     {:noreply, topics}
   end
@@ -120,8 +113,7 @@ defmodule Pleroma.Web.Streamer do
     |> Map.get("#{topic}:#{item.user_id}", [])
     |> Enum.each(fn socket ->
       with %User{} = user <- User.get_cached_by_ap_id(socket.assigns[:user].ap_id),
-           true <- should_send?(user, item),
-           false <- CommonAPI.thread_muted?(user, item.activity) do
+           true <- should_send?(user, item) do
         send(
           socket.transport_pid,
           {:text, represent_notification(socket.assigns[:user], item)}
@@ -209,7 +201,7 @@ defmodule Pleroma.Web.Streamer do
       payload:
         Pleroma.Web.MastodonAPI.ConversationView.render("participation.json", %{
           participation: participation,
-          user: participation.user
+          for: participation.user
         })
         |> Jason.encode!()
     }
@@ -234,11 +226,17 @@ defmodule Pleroma.Web.Streamer do
     blocks = user.info.blocks || []
     mutes = user.info.mutes || []
     reblog_mutes = user.info.muted_reblogs || []
+    domain_blocks = Pleroma.Web.ActivityPub.MRF.subdomains_regex(user.info.domain_blocks)
 
     with parent when not is_nil(parent) <- Object.normalize(item),
          true <- Enum.all?([blocks, mutes, reblog_mutes], &(item.actor not in &1)),
          true <- Enum.all?([blocks, mutes], &(parent.data["actor"] not in &1)),
-         true <- thread_containment(item, user) do
+         %{host: item_host} <- URI.parse(item.actor),
+         %{host: parent_host} <- URI.parse(parent.data["actor"]),
+         false <- Pleroma.Web.ActivityPub.MRF.subdomain_match?(domain_blocks, item_host),
+         false <- Pleroma.Web.ActivityPub.MRF.subdomain_match?(domain_blocks, parent_host),
+         true <- thread_containment(item, user),
+         false <- CommonAPI.thread_muted?(user, item) do
       true
     else
       _ -> false
diff --git a/lib/pleroma/web/templates/email/digest.html.eex b/lib/pleroma/web/templates/email/digest.html.eex
new file mode 100644
index 000000000..860df5f9c
--- /dev/null
+++ b/lib/pleroma/web/templates/email/digest.html.eex
@@ -0,0 +1,568 @@
+<!DOCTYPE html
+	PUBLIC "-//W3C//DTD XHTML 1.0 Transitional //EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+
+<html xmlns="http://www.w3.org/1999/xhtml" xmlns:o="urn:schemas-microsoft-com:office:office"
+	xmlns:v="urn:schemas-microsoft-com:vml">
+
+<head>
+	<!--[if gte mso 9]><xml><o:OfficeDocumentSettings><o:AllowPNG/><o:PixelsPerInch>96</o:PixelsPerInch></o:OfficeDocumentSettings></xml><![endif]-->
+	<meta content="text/html; charset=utf-8" http-equiv="Content-Type" />
+	<meta content="width=device-width" name="viewport" />
+	<!--[if !mso]><!-->
+	<meta content="IE=edge" http-equiv="X-UA-Compatible" />
+	<!--<![endif]-->
+	<title><%= @email.subject %><</title>
+	<!--[if !mso]><!-->
+	<!--<![endif]-->
+	<style type="text/css">
+		body {
+			margin: 0;
+			padding: 0;
+		}
+
+		a {
+
+			color: <%= @styling.link_color %>;
+			text-decoration: none;
+		}
+
+		table,
+		td,
+		tr {
+			vertical-align: top;
+			border-collapse: collapse;
+		}
+
+		* {
+			line-height: inherit;
+		}
+
+		a[x-apple-data-detectors=true] {
+			color: inherit !important;
+			text-decoration: none !important;
+		}
+	</style>
+	<style id="media-query" type="text/css">
+		@media (max-width: 610px) {
+
+			.block-grid,
+			.col {
+				min-width: 320px !important;
+				max-width: 100% !important;
+				display: block !important;
+			}
+
+			.block-grid {
+				width: 100% !important;
+			}
+
+			.col {
+				width: 100% !important;
+			}
+
+			.col>div {
+				margin: 0 auto;
+			}
+
+			.no-stack .col {
+				min-width: 0 !important;
+				display: table-cell !important;
+			}
+
+			.no-stack.two-up .col {
+				width: 50% !important;
+			}
+
+			.no-stack .col.num4 {
+				width: 33% !important;
+			}
+
+			.no-stack .col.num8 {
+				width: 66% !important;
+			}
+
+			.no-stack .col.num4 {
+				width: 33% !important;
+			}
+
+			.no-stack .col.num3 {
+				width: 25% !important;
+			}
+
+			.no-stack .col.num6 {
+				width: 50% !important;
+			}
+
+			.no-stack .col.num9 {
+				width: 75% !important;
+			}
+
+		}
+	</style>
+</head>
+
+<body class="clean-body" style="margin: 0; padding: 0; -webkit-text-size-adjust: 100%; background-color: <%= @styling.background_color %>;">
+	<!--[if IE]><div class="ie-browser"><![endif]-->
+	<table bgcolor="<%= @styling.background_color %>" cellpadding="0" cellspacing="0" class="nl-container" role="presentation"
+		style="table-layout: fixed; vertical-align: top; min-width: 320px; Margin: 0 auto; border-spacing: 0; border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; background-color: <%= @styling.background_color %>; width: 100%;"
+		valign="top" width="100%">
+		<tbody>
+			<tr style="vertical-align: top;" valign="top">
+				<td style="word-break: break-word; vertical-align: top;" valign="top">
+					<!--[if (mso)|(IE)]><table width="100%" cellpadding="0" cellspacing="0" border="0"><tr><td align="center" style="background-color:<%= @styling.background_color %>"><![endif]-->
+					<div style="background-color:transparent;">
+						<div class="block-grid"
+							style="Margin: 0 auto; min-width: 320px; max-width: 590px; overflow-wrap: break-word; word-wrap: break-word; word-break: break-word; background-color: <%= @styling.content_background_color%>;">
+							<div style="border-collapse: collapse;display: table;width: 100%;background-color:<%= @styling.content_background_color%>;">
+								<!--[if (mso)|(IE)]><table width="100%" cellpadding="0" cellspacing="0" border="0" style="background-color:transparent;"><tr><td align="center"><table cellpadding="0" cellspacing="0" border="0" style="width:590px"><tr class="layout-full-width" style="background-color:<%= @styling.content_background_color%>"><![endif]-->
+								<!--[if (mso)|(IE)]><td align="center" width="590" style="background-color:<%= @styling.content_background_color%>;width:590px; border-top: 0px solid transparent; border-left: 0px solid transparent; border-bottom: 0px solid transparent; border-right: 0px solid transparent;" valign="top"><table width="100%" cellpadding="0" cellspacing="0" border="0"><tr><td style="padding-right: 0px; padding-left: 0px; padding-top:5px; padding-bottom:5px;"><![endif]-->
+								<div class="col num12"
+									style="min-width: 320px; max-width: 590px; display: table-cell; vertical-align: top; width: 590px;">
+									<div style="width:100% !important;">
+										<!--[if (!mso)&(!IE)]><!-->
+										<div
+											style="border-top:0px solid transparent; border-left:0px solid transparent; border-bottom:0px solid transparent; border-right:0px solid transparent; padding-top:5px; padding-bottom:5px; padding-right: 0px; padding-left: 0px;">
+											<!--<![endif]-->
+											<div align="center" class="img-container center"
+												style="padding-right: 0px;padding-left: 0px;">
+												<!--[if mso]><table width="100%" cellpadding="0" cellspacing="0" border="0"><tr style="line-height:0px"><td style="padding-right: 0px;padding-left: 0px;" align="center"><![endif]--><img
+													align="center" alt="Image" border="0" class="center" src="cid:logo.png"
+													style="text-decoration: none; -ms-interpolation-mode: bicubic; border: 0; height: 80px; width: auto; max-height: 80px; display: block;"
+													title="Image" height="80" />
+												<!--[if mso]></td></tr></table><![endif]-->
+											</div>
+											<!--[if (!mso)&(!IE)]><!-->
+										</div>
+										<!--<![endif]-->
+									</div>
+								</div>
+								<!--[if (mso)|(IE)]></td></tr></table><![endif]-->
+								<!--[if (mso)|(IE)]></td></tr></table></td></tr></table><![endif]-->
+							</div>
+						</div>
+					</div>
+					<div style="background-color:transparent;">
+						<div class="block-grid"
+							style="Margin: 0 auto; min-width: 320px; max-width: 590px; overflow-wrap: break-word; word-wrap: break-word; word-break: break-word; background-color: <%= @styling.content_background_color%>;">
+							<div style="border-collapse: collapse;display: table;width: 100%;background-color:<%= @styling.content_background_color%>;">
+								<!--[if (mso)|(IE)]><table width="100%" cellpadding="0" cellspacing="0" border="0" style="background-color:transparent;"><tr><td align="center"><table cellpadding="0" cellspacing="0" border="0" style="width:590px"><tr class="layout-full-width" style="background-color:<%= @styling.content_background_color%>"><![endif]-->
+								<!--[if (mso)|(IE)]><td align="center" width="590" style="background-color:<%= @styling.content_background_color%>;width:590px; border-top: 0px solid transparent; border-left: 0px solid transparent; border-bottom: 0px solid transparent; border-right: 0px solid transparent;" valign="top"><table width="100%" cellpadding="0" cellspacing="0" border="0"><tr><td style="padding-right: 0px; padding-left: 0px; padding-top:5px; padding-bottom:5px;"><![endif]-->
+								<div class="col num12"
+									style="min-width: 320px; max-width: 590px; display: table-cell; vertical-align: top; width: 590px;">
+									<div style="width:100% !important;">
+										<!--[if (!mso)&(!IE)]><!-->
+										<div
+											style="border-top:0px solid transparent; border-left:0px solid transparent; border-bottom:0px solid transparent; border-right:0px solid transparent; padding-top:5px; padding-bottom:5px; padding-right: 0px; padding-left: 0px;">
+											<!--<![endif]-->
+											<!--[if mso]><table width="100%" cellpadding="0" cellspacing="0" border="0"><tr><td style="padding-right: 10px; padding-left: 10px; padding-top: 10px; padding-bottom: 10px; font-family: Arial, sans-serif"><![endif]-->
+											<div
+												style="line-height:120%;padding-top:10px;padding-right:10px;padding-bottom:10px;padding-left:10px;">
+												<div
+													style="font-family: Arial, 'Helvetica Neue', Helvetica, sans-serif;line-height: 14px; color: <%= @styling.header_color %>;">
+													<p style="line-height: 36px; text-align: center; margin: 0;"><span
+															style="font-size: 30px; color: <%= @styling.header_color %>;">Hey <%= @user.nickname %>, here is what you've missed!</span></p>
+												</div>
+											</div>
+											<!--[if mso]></td></tr></table><![endif]-->
+											<!--[if (!mso)&(!IE)]><!-->
+										</div>
+										<!--<![endif]-->
+									</div>
+								</div>
+								<!--[if (mso)|(IE)]></td></tr></table><![endif]-->
+								<!--[if (mso)|(IE)]></td></tr></table></td></tr></table><![endif]-->
+							</div>
+						</div>
+					</div>
+					<div style="background-color:transparent;">
+						<div class="block-grid"
+							style="Margin: 0 auto; min-width: 320px; max-width: 590px; overflow-wrap: break-word; word-wrap: break-word; word-break: break-word; background-color: <%= @styling.content_background_color%>;">
+							<div style="border-collapse: collapse;display: table;width: 100%;background-color:<%= @styling.content_background_color%>;">
+								<!--[if (mso)|(IE)]><table width="100%" cellpadding="0" cellspacing="0" border="0" style="background-color:transparent;"><tr><td align="center"><table cellpadding="0" cellspacing="0" border="0" style="width:590px"><tr class="layout-full-width" style="background-color:<%= @styling.content_background_color%>"><![endif]-->
+								<!--[if (mso)|(IE)]><td align="center" width="590" style="background-color:<%= @styling.content_background_color%>;width:590px; border-top: 0px solid transparent; border-left: 0px solid transparent; border-bottom: 0px solid transparent; border-right: 0px solid transparent;" valign="top"><table width="100%" cellpadding="0" cellspacing="0" border="0"><tr><td style="padding-right: 15px; padding-left: 15px; padding-top:5px; padding-bottom:5px;"><![endif]-->
+								<div class="col num12"
+									style="min-width: 320px; max-width: 590px; display: table-cell; vertical-align: top; width: 590px;">
+									<div style="width:100% !important;">
+										<!--[if (!mso)&(!IE)]><!-->
+										<div
+											style="border-top:0px solid transparent; border-left:0px solid transparent; border-bottom:0px solid transparent; border-right:0px solid transparent; padding-top:5px; padding-bottom:5px; padding-right: 15px; padding-left: 15px;">
+											<!--<![endif]-->
+											<table border="0" cellpadding="0" cellspacing="0" class="divider" role="presentation"
+												style="table-layout: fixed; vertical-align: top; border-spacing: 0; border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; min-width: 100%; -ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%;"
+												valign="top" width="100%">
+												<tbody>
+													<tr style="vertical-align: top;" valign="top">
+														<td class="divider_inner"
+															style="word-break: break-word; vertical-align: top; min-width: 100%; -ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%; padding-top: 10px; padding-right: 10px; padding-bottom: 10px; padding-left: 10px;"
+															valign="top">
+															<table align="center" border="0" cellpadding="0" cellspacing="0" class="divider_content"
+																height="0" role="presentation"
+																style="table-layout: fixed; vertical-align: top; border-spacing: 0; border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; width: 100%; border-top: 1px solid <%= @styling.text_color %>; height: 0px;"
+																valign="top" width="100%">
+																<tbody>
+																	<tr style="vertical-align: top;" valign="top">
+																		<td height="0"
+																			style="word-break: break-word; vertical-align: top; -ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%;"
+																			valign="top"><span></span></td>
+																	</tr>
+																</tbody>
+															</table>
+														</td>
+													</tr>
+												</tbody>
+											</table>
+											<!--[if mso]><table width="100%" cellpadding="0" cellspacing="0" border="0"><tr><td style="padding-right: 10px; padding-left: 10px; padding-top: 10px; padding-bottom: 10px; font-family: Arial, sans-serif"><![endif]-->
+											<div
+												style="color:<%= @styling.text_color %>;font-family:Arial, 'Helvetica Neue', Helvetica, sans-serif;line-height:120%;padding-top:10px;padding-right:10px;padding-bottom:10px;padding-left:10px;">
+												<p
+													style="font-size: 12px; line-height: 24px; text-align: center; color: <%= @styling.text_color %>; font-family: Arial, 'Helvetica Neue', Helvetica, sans-serif; margin: 0;">
+													<span style="font-size: 20px;">Mentions</span></p>
+											</div>
+											<!--[if mso]></td></tr></table><![endif]-->
+											<!--[if (!mso)&(!IE)]><!-->
+										</div>
+										<!--<![endif]-->
+									</div>
+								</div>
+								<!--[if (mso)|(IE)]></td></tr></table><![endif]-->
+								<!--[if (mso)|(IE)]></td></tr></table></td></tr></table><![endif]-->
+							</div>
+						</div>
+					</div>
+
+          <%= for %{data: mention, object: object, from: from} <- @mentions do %>
+					<%# mention START %>
+					<%# user card START %>
+					<div style="background-color:transparent;">
+						<div class="block-grid mixed-two-up no-stack"
+							style="Margin: 0 auto; min-width: 320px; max-width: 590px; overflow-wrap: break-word; word-wrap: break-word; word-break: break-word; background-color: <%= @styling.content_background_color%>;">
+							<div style="border-collapse: collapse;display: table;width: 100%;background-color:<%= @styling.content_background_color%>;">
+								<!--[if (mso)|(IE)]><table width="100%" cellpadding="0" cellspacing="0" border="0" style="background-color:transparent;"><tr><td align="center"><table cellpadding="0" cellspacing="0" border="0" style="width:590px"><tr class="layout-full-width" style="background-color:<%= @styling.content_background_color%>"><![endif]-->
+								<!--[if (mso)|(IE)]><td align="center" width="147" style="background-color:<%= @styling.content_background_color%>;width:76px; border-top: 0px solid transparent; border-left: 0px solid transparent; border-bottom: 0px solid transparent; border-right: 0px solid transparent;" valign="top"><table width="100%" cellpadding="0" cellspacing="0" border="0"><tr><td style="padding-right: 0px; padding-left: 20px; padding-top:5px; padding-bottom:5px;"><![endif]-->
+								<div class="col num3"
+									style="display: table-cell; vertical-align: top; max-width: 320px; min-width: 76px; width: 76px;">
+									<div style="width:100% !important;">
+										<!--[if (!mso)&(!IE)]><!-->
+										<div
+											style="border-top:0px solid transparent; border-left:0px solid transparent; border-bottom:0px solid transparent; border-right:0px solid transparent; padding-top:5px; padding-bottom:5px; padding-right: 0px; padding-left: 20px;">
+											<!--<![endif]-->
+											<div align="left" class="img-container left "
+												style="padding-right: 0px;padding-left: 0px;">
+												<!--[if mso]><table width="100%" cellpadding="0" cellspacing="0" border="0"><tr style="line-height:0px"><td style="padding-right: 0px;padding-left: 0px;" align="left"><![endif]--><img
+													alt="<%= from.name %>" border="0" class="left " src="<%= avatar_url(from) %>"
+													style="text-decoration: none; -ms-interpolation-mode: bicubic; border: 0; height: auto; width: 100%; max-width: 76px; display: block;"
+													title="<%= from.name %>" width="76" />
+												<!--[if mso]></td></tr></table><![endif]-->
+											</div>
+											<!--[if (!mso)&(!IE)]><!-->
+										</div>
+										<!--<![endif]-->
+									</div>
+								</div>
+
+								<!--[if (mso)|(IE)]></td></tr></table><![endif]-->
+								<!--[if (mso)|(IE)]></td><td align="center" width="442" style="background-color:<%= @styling.content_background_color%>;width:442px; border-top: 0px solid transparent; border-left: 0px solid transparent; border-bottom: 0px solid transparent; border-right: 0px solid transparent;" valign="top"><table width="100%" cellpadding="0" cellspacing="0" border="0"><tr><td style="padding-right: 0px; padding-left: 0px; padding-top:5px; padding-bottom:5px;"><![endif]-->
+								<div class="col num9"
+									style="display: table-cell; vertical-align: top; min-width: 320px; max-width: 441px; width: 442px;">
+									<div style="width:100% !important;">
+										<!--[if (!mso)&(!IE)]><!-->
+										<div
+											style="border-top:0px solid transparent; border-left:0px solid transparent; border-bottom:0px solid transparent; border-right:0px solid transparent; padding-top:5px; padding-bottom:5px; padding-right: 0px; padding-left: 0px;">
+											<!--<![endif]-->
+											<!--[if mso]><table width="100%" cellpadding="0" cellspacing="0" border="0"><tr><td style="padding-right: 10px; padding-left: 10px; padding-top: 10px; padding-bottom: 10px; font-family: Arial, sans-serif"><![endif]-->
+											<div
+												style="color:<%= @styling.text_color %>;font-family:Arial, 'Helvetica Neue', Helvetica, sans-serif;line-height:120%;padding-top:10px;padding-right:10px;padding-bottom:10px;padding-left:10px;">
+												<div
+													style="font-family: Arial, 'Helvetica Neue', Helvetica, sans-serif; font-size: 12px; line-height: 14px; color: <%= @styling.text_color %>;">
+													<p style="font-size: 14px; line-height: 19px; margin: 0;"><span
+															style="font-size: 16px; color: <%= @styling.text_color %>;"><%= from.name %></span></p>
+													<p style="font-size: 14px; line-height: 19px; margin: 0;"><span
+															style="font-size: 16px;"><%= link "@" <> from.nickname, style: "color: #{@styling.link_color};text-decoration: none;", to: mention.activity.actor %></span></p>
+												</div>
+											</div>
+											<!--[if mso]></td></tr></table><![endif]-->
+											<!--[if (!mso)&(!IE)]><!-->
+										</div>
+										<!--<![endif]-->
+									</div>
+								</div>
+								<!--[if (mso)|(IE)]></td></tr></table><![endif]-->
+								<!--[if (mso)|(IE)]></td></tr></table></td></tr></table><![endif]-->
+							</div>
+						</div>
+					</div>
+					<%# user card END %>
+
+					<div style="background-color:transparent;">
+						<div class="block-grid"
+							style="Margin: 0 auto; min-width: 320px; max-width: 590px; overflow-wrap: break-word; word-wrap: break-word; word-break: break-word; background-color: <%= @styling.content_background_color%>;">
+							<div style="border-collapse: collapse;display: table;width: 100%;background-color:<%= @styling.content_background_color%>;">
+								<!--[if (mso)|(IE)]><table width="100%" cellpadding="0" cellspacing="0" border="0" style="background-color:transparent;"><tr><td align="center"><table cellpadding="0" cellspacing="0" border="0" style="width:590px"><tr class="layout-full-width" style="background-color:<%= @styling.content_background_color%>"><![endif]-->
+								<!--[if (mso)|(IE)]><td align="center" width="590" style="background-color:<%= @styling.content_background_color%>;width:590px; border-top: 0px solid transparent; border-left: 0px solid transparent; border-bottom: 0px solid transparent; border-right: 0px solid transparent;" valign="top"><table width="100%" cellpadding="0" cellspacing="0" border="0"><tr><td style="padding-right: 15px; padding-left: 15px; padding-top:5px; padding-bottom:5px;"><![endif]-->
+								<div class="col num12"
+									style="min-width: 320px; max-width: 590px; display: table-cell; vertical-align: top; width: 590px;">
+									<div style="width:100% !important;">
+										<!--[if (!mso)&(!IE)]><!-->
+										<div
+											style="border-top:0px solid transparent; border-left:0px solid transparent; border-bottom:0px solid transparent; border-right:0px solid transparent; padding-top:5px; padding-bottom:5px; padding-right: 15px; padding-left: 15px;">
+											<!--<![endif]-->
+											<!--[if mso]><table width="100%" cellpadding="0" cellspacing="0" border="0"><tr><td style="padding-right: 10px; padding-left: 10px; padding-top: 10px; padding-bottom: 10px; font-family: Arial, sans-serif"><![endif]-->
+											<div
+												style="color:<%= @styling.text_color %>;font-family:Arial, 'Helvetica Neue', Helvetica, sans-serif;line-height:120%;padding-top:10px;padding-right:10px;padding-bottom:10px;padding-left:10px;">
+												<div
+													style="font-family: Arial, 'Helvetica Neue', Helvetica, sans-serif; font-size: 12px; line-height: 14px; color: <%= @styling.text_color %>;">
+													<span style="font-size: 16px; line-height: 19px;"><%= raw object.data["content"] %></span></div>
+											</div>
+											<!--[if mso]></td></tr></table><![endif]-->
+											<!--[if mso]><table width="100%" cellpadding="0" cellspacing="0" border="0"><tr><td style="padding-right: 10px; padding-left: 15px; padding-top: 10px; padding-bottom: 10px; font-family: Arial, sans-serif"><![endif]-->
+											<div
+												style="color:<%= @styling.text_muted_color %>;font-family:Arial, 'Helvetica Neue', Helvetica, sans-serif;line-height:120%;padding-top:10px;padding-right:10px;padding-bottom:10px;padding-left:15px;">
+												<div
+													style="font-family: Arial, 'Helvetica Neue', Helvetica, sans-serif; font-size: 12px; line-height: 14px; color: <%= @styling.text_muted_color %>;">
+													<p style="font-size: 14px; line-height: 16px; margin: 0;"><%= format_date object.data["published"] %></p>
+												</div>
+											</div>
+											<!--[if mso]></td></tr></table><![endif]-->
+											<!--[if (!mso)&(!IE)]><!-->
+										</div>
+										<!--<![endif]-->
+									</div>
+								</div>
+								<!--[if (mso)|(IE)]></td></tr></table><![endif]-->
+								<!--[if (mso)|(IE)]></td></tr></table></td></tr></table><![endif]-->
+							</div>
+						</div>
+					</div>
+					<%# mention END %>
+          <% end %>
+
+          <%= if @followers != [] do %>
+
+          <%# new followers header START %>
+					<div style="background-color:transparent;">
+						<div class="block-grid"
+							style="Margin: 0 auto; min-width: 320px; max-width: 590px; overflow-wrap: break-word; word-wrap: break-word; word-break: break-word; background-color: <%= @styling.content_background_color%>;">
+							<div style="border-collapse: collapse;display: table;width: 100%;background-color:<%= @styling.content_background_color%>;">
+								<!--[if (mso)|(IE)]><table width="100%" cellpadding="0" cellspacing="0" border="0" style="background-color:transparent;"><tr><td align="center"><table cellpadding="0" cellspacing="0" border="0" style="width:590px"><tr class="layout-full-width" style="background-color:<%= @styling.content_background_color%>"><![endif]-->
+								<!--[if (mso)|(IE)]><td align="center" width="590" style="background-color:<%= @styling.content_background_color%>;width:590px; border-top: 0px solid transparent; border-left: 0px solid transparent; border-bottom: 0px solid transparent; border-right: 0px solid transparent;" valign="top"><table width="100%" cellpadding="0" cellspacing="0" border="0"><tr><td style="padding-right: 15px; padding-left: 15px; padding-top:5px; padding-bottom:5px;"><![endif]-->
+								<div class="col num12"
+									style="min-width: 320px; max-width: 590px; display: table-cell; vertical-align: top; width: 590px;">
+									<div style="width:100% !important;">
+										<!--[if (!mso)&(!IE)]><!-->
+										<div
+											style="border-top:0px solid transparent; border-left:0px solid transparent; border-bottom:0px solid transparent; border-right:0px solid transparent; padding-top:5px; padding-bottom:5px; padding-right: 15px; padding-left: 15px;">
+											<!--<![endif]-->
+											<table border="0" cellpadding="0" cellspacing="0" class="divider" role="presentation"
+												style="table-layout: fixed; vertical-align: top; border-spacing: 0; border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; min-width: 100%; -ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%;"
+												valign="top" width="100%">
+												<tbody>
+													<tr style="vertical-align: top;" valign="top">
+														<td class="divider_inner"
+															style="word-break: break-word; vertical-align: top; min-width: 100%; -ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%; padding-top: 10px; padding-right: 10px; padding-bottom: 10px; padding-left: 10px;"
+															valign="top">
+															<table align="center" border="0" cellpadding="0" cellspacing="0" class="divider_content"
+																height="0" role="presentation"
+																style="table-layout: fixed; vertical-align: top; border-spacing: 0; border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; width: 100%; border-top: 1px solid <%= @styling.text_color %>; height: 0px;"
+																valign="top" width="100%">
+																<tbody>
+																	<tr style="vertical-align: top;" valign="top">
+																		<td height="0"
+																			style="word-break: break-word; vertical-align: top; -ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%;"
+																			valign="top"><span></span></td>
+																	</tr>
+																</tbody>
+															</table>
+														</td>
+													</tr>
+												</tbody>
+											</table>
+											<!--[if mso]><table width="100%" cellpadding="0" cellspacing="0" border="0"><tr><td style="padding-right: 10px; padding-left: 10px; padding-top: 10px; padding-bottom: 10px; font-family: Arial, sans-serif"><![endif]-->
+											<div
+												style="color:<%= @styling.text_color %>;font-family:Arial, 'Helvetica Neue', Helvetica, sans-serif;line-height:120%;padding-top:10px;padding-right:10px;padding-bottom:10px;padding-left:10px;">
+												<div
+													style="font-family: Arial, 'Helvetica Neue', Helvetica, sans-serif; font-size: 12px; line-height: 14px; color: <%= @styling.text_color %>;">
+													<p style="font-size: 12px; line-height: 24px; text-align: center; margin: 0;"><span
+															style="font-size: 20px;"><%= length(@followers) %> New Followers</span><span
+															style="font-size: 20px; line-height: 24px;"></span></p>
+												</div>
+											</div>
+											<!--[if mso]></td></tr></table><![endif]-->
+											<!--[if (!mso)&(!IE)]><!-->
+										</div>
+										<!--<![endif]-->
+									</div>
+								</div>
+								<!--[if (mso)|(IE)]></td></tr></table><![endif]-->
+								<!--[if (mso)|(IE)]></td></tr></table></td></tr></table><![endif]-->
+							</div>
+						</div>
+					</div>
+          <%# new followers header END %>
+
+        <%= for %{data: follow, from: from} <- @followers do %>
+					<%# user card START %>
+					<div style="background-color:transparent;">
+						<div class="block-grid mixed-two-up no-stack"
+							style="Margin: 0 auto; min-width: 320px; max-width: 590px; overflow-wrap: break-word; word-wrap: break-word; word-break: break-word; background-color: <%= @styling.content_background_color%>;">
+							<div style="border-collapse: collapse;display: table;width: 100%;background-color:<%= @styling.content_background_color%>;">
+								<!--[if (mso)|(IE)]><table width="100%" cellpadding="0" cellspacing="0" border="0" style="background-color:transparent;"><tr><td align="center"><table cellpadding="0" cellspacing="0" border="0" style="width:590px"><tr class="layout-full-width" style="background-color:<%= @styling.content_background_color%>"><![endif]-->
+								<!--[if (mso)|(IE)]><td align="center" width="147" style="background-color:<%= @styling.content_background_color%>;width:76px; border-top: 0px solid transparent; border-left: 0px solid transparent; border-bottom: 0px solid transparent; border-right: 0px solid transparent;" valign="top"><table width="100%" cellpadding="0" cellspacing="0" border="0"><tr><td style="padding-right: 0px; padding-left: 20px; padding-top:5px; padding-bottom:5px;"><![endif]-->
+								<div class="col num3"
+									style="display: table-cell; vertical-align: top; max-width: 320px; min-width: 76px; width: 76px;">
+									<div style="width:100% !important;">
+										<!--[if (!mso)&(!IE)]><!-->
+										<div
+											style="border-top:0px solid transparent; border-left:0px solid transparent; border-bottom:0px solid transparent; border-right:0px solid transparent; padding-top:5px; padding-bottom:5px; padding-right: 0px; padding-left: 20px;">
+											<!--<![endif]-->
+											<div align="left" class="img-container left "
+												style="padding-right: 0px;padding-left: 0px;">
+												<!--[if mso]><table width="100%" cellpadding="0" cellspacing="0" border="0"><tr style="line-height:0px"><td style="padding-right: 0px;padding-left: 0px;" align="left"><![endif]--><img
+													alt="<%= from.name %>" border="0" class="left " src="<%= avatar_url(from) %>"
+													style="text-decoration: none; -ms-interpolation-mode: bicubic; border: 0; height: auto; width: 100%; max-width: 76px; display: block;"
+													title="<%= from.name %>" width="76" />
+												<!--[if mso]></td></tr></table><![endif]-->
+											</div>
+											<!--[if (!mso)&(!IE)]><!-->
+										</div>
+										<!--<![endif]-->
+									</div>
+								</div>
+
+								<!--[if (mso)|(IE)]></td></tr></table><![endif]-->
+								<!--[if (mso)|(IE)]></td><td align="center" width="442" style="background-color:<%= @styling.content_background_color%>;width:442px; border-top: 0px solid transparent; border-left: 0px solid transparent; border-bottom: 0px solid transparent; border-right: 0px solid transparent;" valign="top"><table width="100%" cellpadding="0" cellspacing="0" border="0"><tr><td style="padding-right: 0px; padding-left: 0px; padding-top:5px; padding-bottom:5px;"><![endif]-->
+								<div class="col num9"
+									style="display: table-cell; vertical-align: top; min-width: 320px; max-width: 441px; width: 442px;">
+									<div style="width:100% !important;">
+										<!--[if (!mso)&(!IE)]><!-->
+										<div
+											style="border-top:0px solid transparent; border-left:0px solid transparent; border-bottom:0px solid transparent; border-right:0px solid transparent; padding-top:5px; padding-bottom:5px; padding-right: 0px; padding-left: 0px;">
+											<!--<![endif]-->
+											<!--[if mso]><table width="100%" cellpadding="0" cellspacing="0" border="0"><tr><td style="padding-right: 10px; padding-left: 10px; padding-top: 10px; padding-bottom: 10px; font-family: Arial, sans-serif"><![endif]-->
+											<div
+												style="color:<%= @styling.text_color %>;font-family:Arial, 'Helvetica Neue', Helvetica, sans-serif;line-height:120%;padding-top:10px;padding-right:10px;padding-bottom:10px;padding-left:10px;">
+												<div
+													style="font-family: Arial, 'Helvetica Neue', Helvetica, sans-serif; font-size: 12px; line-height: 14px; color: <%= @styling.text_color %>;">
+													<p style="font-size: 14px; line-height: 19px; margin: 0;"><span
+															style="font-size: 16px; color: <%= @styling.text_color %>;"><%= from.name %></span></p>
+													<p style="font-size: 14px; line-height: 19px; margin: 0;"><span
+															style="font-size: 16px;"><%= link "@" <> from.nickname, style: "color: #{@styling.link_color};text-decoration: none;", to: follow.activity.actor %></span></p>
+												</div>
+											</div>
+											<!--[if mso]></td></tr></table><![endif]-->
+											<!--[if (!mso)&(!IE)]><!-->
+										</div>
+										<!--<![endif]-->
+									</div>
+								</div>
+								<!--[if (mso)|(IE)]></td></tr></table><![endif]-->
+								<!--[if (mso)|(IE)]></td></tr></table></td></tr></table><![endif]-->
+							</div>
+						</div>
+					</div>
+					<%# user card END %>
+        <% end %>
+
+
+          <% end %>
+
+          <%# divider start %>
+					<div style="background-color:transparent;">
+						<div class="block-grid"
+							style="Margin: 0 auto; min-width: 320px; max-width: 590px; overflow-wrap: break-word; word-wrap: break-word; word-break: break-word; background-color: <%= @styling.content_background_color%>;">
+							<div style="border-collapse: collapse;display: table;width: 100%;background-color:<%= @styling.content_background_color%>;">
+								<!--[if (mso)|(IE)]><table width="100%" cellpadding="0" cellspacing="0" border="0" style="background-color:transparent;"><tr><td align="center"><table cellpadding="0" cellspacing="0" border="0" style="width:590px"><tr class="layout-full-width" style="background-color:<%= @styling.content_background_color%>"><![endif]-->
+								<!--[if (mso)|(IE)]><td align="center" width="590" style="background-color:<%= @styling.content_background_color%>;width:590px; border-top: 0px solid transparent; border-left: 0px solid transparent; border-bottom: 0px solid transparent; border-right: 0px solid transparent;" valign="top"><table width="100%" cellpadding="0" cellspacing="0" border="0"><tr><td style="padding-right: 0px; padding-left: 0px; padding-top:5px; padding-bottom:5px;"><![endif]-->
+								<div class="col num12"
+									style="min-width: 320px; max-width: 590px; display: table-cell; vertical-align: top; width: 590px;">
+									<div style="width:100% !important;">
+										<!--[if (!mso)&(!IE)]><!-->
+										<div
+											style="border-top:0px solid transparent; border-left:0px solid transparent; border-bottom:0px solid transparent; border-right:0px solid transparent; padding-top:5px; padding-bottom:5px; padding-right: 0px; padding-left: 0px;">
+											<!--<![endif]-->
+											<table border="0" cellpadding="0" cellspacing="0" class="divider" role="presentation"
+												style="table-layout: fixed; vertical-align: top; border-spacing: 0; border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; min-width: 100%; -ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%;"
+												valign="top" width="100%">
+												<tbody>
+													<tr style="vertical-align: top;" valign="top">
+														<td class="divider_inner"
+															style="word-break: break-word; vertical-align: top; min-width: 100%; -ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%; padding-top: 10px; padding-right: 10px; padding-bottom: 10px; padding-left: 10px;"
+															valign="top">
+															<table align="center" border="0" cellpadding="0" cellspacing="0" class="divider_content"
+																height="0" role="presentation"
+																style="table-layout: fixed; vertical-align: top; border-spacing: 0; border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; width: 100%; border-top: 1px solid <%= @styling.text_color %>; height: 0px;"
+																valign="top" width="100%">
+																<tbody>
+																	<tr style="vertical-align: top;" valign="top">
+																		<td height="0"
+																			style="word-break: break-word; vertical-align: top; -ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%;"
+																			valign="top"><span></span></td>
+																	</tr>
+																</tbody>
+															</table>
+														</td>
+													</tr>
+												</tbody>
+											</table>
+											<!--[if (!mso)&(!IE)]><!-->
+										</div>
+										<!--<![endif]-->
+									</div>
+								</div>
+								<!--[if (mso)|(IE)]></td></tr></table><![endif]-->
+								<!--[if (mso)|(IE)]></td></tr></table></td></tr></table><![endif]-->
+							</div>
+						</div>
+					</div>
+
+          <%# divider end %>
+
+
+					<div style="background-color:transparent;">
+						<div class="block-grid"
+							style="Margin: 0 auto; min-width: 320px; max-width: 590px; overflow-wrap: break-word; word-wrap: break-word; word-break: break-word; background-color: <%= @styling.content_background_color%>;">
+							<div style="border-collapse: collapse;display: table;width: 100%;background-color:<%= @styling.content_background_color%>;">
+								<!--[if (mso)|(IE)]><table width="100%" cellpadding="0" cellspacing="0" border="0" style="background-color:transparent;"><tr><td align="center"><table cellpadding="0" cellspacing="0" border="0" style="width:590px"><tr class="layout-full-width" style="background-color:<%= @styling.content_background_color%>"><![endif]-->
+								<!--[if (mso)|(IE)]><td align="center" width="590" style="background-color:<%= @styling.content_background_color%>;width:590px; border-top: 0px solid transparent; border-left: 0px solid transparent; border-bottom: 0px solid transparent; border-right: 0px solid transparent;" valign="top"><table width="100%" cellpadding="0" cellspacing="0" border="0"><tr><td style="padding-right: 0px; padding-left: 0px; padding-top:5px; padding-bottom:5px;"><![endif]-->
+								<div class="col num12"
+									style="min-width: 320px; max-width: 590px; display: table-cell; vertical-align: top; width: 590px;">
+									<div style="width:100% !important;">
+										<!--[if (!mso)&(!IE)]><!-->
+										<div
+											style="border-top:0px solid transparent; border-left:0px solid transparent; border-bottom:0px solid transparent; border-right:0px solid transparent; padding-top:5px; padding-bottom:5px; padding-right: 0px; padding-left: 0px;">
+											<!--<![endif]-->
+											<!--[if mso]><table width="100%" cellpadding="0" cellspacing="0" border="0"><tr><td style="padding-right: 10px; padding-left: 10px; padding-top: 10px; padding-bottom: 10px; font-family: Arial, sans-serif"><![endif]-->
+											<div
+												style="color:<%= @styling.text_color %>;font-family:Arial, 'Helvetica Neue', Helvetica, sans-serif;line-height:120%;padding-top:10px;padding-right:10px;padding-bottom:10px;padding-left:10px;">
+												<p
+													style="font-size: 12px; line-height: 16px; text-align: center; color: <%= @styling.text_color %>; font-family: Arial, 'Helvetica Neue', Helvetica, sans-serif; margin: 0;">
+													<span style="font-size: 14px;">You have received this email because you have signed up to receive digest emails from <b><%= @instance %></b> Pleroma instance.</span></p>
+												<p
+													style="font-size: 12px; line-height: 14px; text-align: center; color: <%= @styling.text_color %>; font-family: Arial, 'Helvetica Neue', Helvetica, sans-serif; margin: 0;">
+													 </p>
+												<p
+													style="font-size: 12px; line-height: 16px; text-align: center; color: <%= @styling.text_color %>; font-family: Arial, 'Helvetica Neue', Helvetica, sans-serif; margin: 0;">
+													<span style="font-size: 14px;">The email address you are subscribed as is <a href="mailto:<%= @user.email %>" style="color: <%= @styling.link_color %>;text-decoration: none;"><%= @user.email %></a>. </span></p>
+												<p
+													style="font-size: 12px; line-height: 16px; text-align: center; color: <%= @styling.text_color %>; font-family: Arial, 'Helvetica Neue', Helvetica, sans-serif; margin: 0;">
+													<span style="font-size: 14px;">To unsubscribe, please go <%= link "here", style: "color: #{@styling.link_color};text-decoration: none;", to: @unsubscribe_link %>.</span></p>
+											</div>
+											<!--[if mso]></td></tr></table><![endif]-->
+											<!--[if (!mso)&(!IE)]><!-->
+										</div>
+										<!--<![endif]-->
+									</div>
+								</div>
+								<!--[if (mso)|(IE)]></td></tr></table><![endif]-->
+								<!--[if (mso)|(IE)]></td></tr></table></td></tr></table><![endif]-->
+							</div>
+						</div>
+					</div>
+					<!--[if (mso)|(IE)]></td></tr></table><![endif]-->
+				</td>
+			</tr>
+		</tbody>
+	</table>
+	<!--[if (IE)]></div><![endif]-->
+</body>
+
+</html>
diff --git a/lib/pleroma/web/templates/layout/app.html.eex b/lib/pleroma/web/templates/layout/app.html.eex
index b3cf9ed11..5836ec1e0 100644
--- a/lib/pleroma/web/templates/layout/app.html.eex
+++ b/lib/pleroma/web/templates/layout/app.html.eex
@@ -36,6 +36,11 @@
         margin-bottom: 20px;
       }
 
+      a {
+        color: color: #d8a070;
+        text-decoration: none;
+      }
+
       form {
         width: 100%;
       }
diff --git a/lib/pleroma/web/templates/layout/email.html.eex b/lib/pleroma/web/templates/layout/email.html.eex
new file mode 100644
index 000000000..f6dcd7f0f
--- /dev/null
+++ b/lib/pleroma/web/templates/layout/email.html.eex
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title><%= @email.subject %></title>
+  </head>
+  <body>
+    <%= render @view_module, @view_template, assigns %>
+  </body>
+</html>
\ No newline at end of file
diff --git a/lib/pleroma/web/templates/mailer/subscription/unsubscribe_failure.html.eex b/lib/pleroma/web/templates/mailer/subscription/unsubscribe_failure.html.eex
new file mode 100644
index 000000000..7b476f02d
--- /dev/null
+++ b/lib/pleroma/web/templates/mailer/subscription/unsubscribe_failure.html.eex
@@ -0,0 +1 @@
+<h1>UNSUBSCRIBE FAILURE</h1>
diff --git a/lib/pleroma/web/templates/mailer/subscription/unsubscribe_success.html.eex b/lib/pleroma/web/templates/mailer/subscription/unsubscribe_success.html.eex
new file mode 100644
index 000000000..6dfa2c185
--- /dev/null
+++ b/lib/pleroma/web/templates/mailer/subscription/unsubscribe_success.html.eex
@@ -0,0 +1 @@
+<h1>UNSUBSCRIBE SUCCESSFUL</h1>
diff --git a/lib/pleroma/web/twitter_api/controllers/util_controller.ex b/lib/pleroma/web/twitter_api/controllers/util_controller.ex
index 9e4da7dca..3405bd3b7 100644
--- a/lib/pleroma/web/twitter_api/controllers/util_controller.ex
+++ b/lib/pleroma/web/twitter_api/controllers/util_controller.ex
@@ -15,11 +15,11 @@ defmodule Pleroma.Web.TwitterAPI.UtilController do
   alias Pleroma.Plugs.AuthenticationPlug
   alias Pleroma.User
   alias Pleroma.Web
-  alias Pleroma.Web.ActivityPub.ActivityPub
   alias Pleroma.Web.CommonAPI
-  alias Pleroma.Web.OStatus
   alias Pleroma.Web.WebFinger
 
+  plug(Pleroma.Plugs.SetFormatPlug when action in [:config, :version])
+
   def help_test(conn, _params) do
     json(conn, "ok")
   end
@@ -60,27 +60,25 @@ defmodule Pleroma.Web.TwitterAPI.UtilController do
       %Activity{id: activity_id} = Activity.get_create_by_object_ap_id(object.data["id"])
       redirect(conn, to: "/notice/#{activity_id}")
     else
-      {err, followee} = OStatus.find_or_make_user(acct)
-      avatar = User.avatar_url(followee)
-      name = followee.nickname
-      id = followee.id
-
-      if !!user do
+      with {:ok, followee} <- User.get_or_fetch(acct) do
         conn
-        |> render("follow.html", %{error: err, acct: acct, avatar: avatar, name: name, id: id})
-      else
-        conn
-        |> render("follow_login.html", %{
+        |> render(follow_template(user), %{
           error: false,
           acct: acct,
-          avatar: avatar,
-          name: name,
-          id: id
+          avatar: User.avatar_url(followee),
+          name: followee.nickname,
+          id: followee.id
         })
+      else
+        {:error, _reason} ->
+          render(conn, follow_template(user), %{error: :error})
       end
     end
   end
 
+  defp follow_template(%User{} = _user), do: "follow.html"
+  defp follow_template(_), do: "follow_login.html"
+
   defp is_status?(acct) do
     case Pleroma.Object.Fetcher.fetch_and_contain_remote_object_from_id(acct) do
       {:ok, %{"type" => type}} when type in ["Article", "Note", "Video", "Page", "Question"] ->
@@ -94,50 +92,53 @@ defmodule Pleroma.Web.TwitterAPI.UtilController do
   def do_remote_follow(conn, %{
         "authorization" => %{"name" => username, "password" => password, "id" => id}
       }) do
-    followee = User.get_cached_by_id(id)
-    avatar = User.avatar_url(followee)
-    name = followee.nickname
-
-    with %User{} = user <- User.get_cached_by_nickname(username),
-         true <- AuthenticationPlug.checkpw(password, user.password_hash),
-         %User{} = _followed <- User.get_cached_by_id(id),
-         {:ok, follower} <- User.follow(user, followee),
-         {:ok, _activity} <- ActivityPub.follow(follower, followee) do
+    with %User{} = followee <- User.get_cached_by_id(id),
+         {_, %User{} = user, _} <- {:auth, User.get_cached_by_nickname(username), followee},
+         {_, true, _} <- {
+           :auth,
+           AuthenticationPlug.checkpw(password, user.password_hash),
+           followee
+         },
+         {:ok, _follower, _followee, _activity} <- CommonAPI.follow(user, followee) do
       conn
       |> render("followed.html", %{error: false})
     else
       # Was already following user
       {:error, "Could not follow user:" <> _rest} ->
-        render(conn, "followed.html", %{error: false})
+        render(conn, "followed.html", %{error: "Error following account"})
 
-      _e ->
+      {:auth, _, followee} ->
         conn
         |> render("follow_login.html", %{
           error: "Wrong username or password",
           id: id,
-          name: name,
-          avatar: avatar
+          name: followee.nickname,
+          avatar: User.avatar_url(followee)
         })
+
+      e ->
+        Logger.debug("Remote follow failed with error #{inspect(e)}")
+        render(conn, "followed.html", %{error: "Something went wrong."})
     end
   end
 
   def do_remote_follow(%{assigns: %{user: user}} = conn, %{"user" => %{"id" => id}}) do
-    with %User{} = followee <- User.get_cached_by_id(id),
-         {:ok, follower} <- User.follow(user, followee),
-         {:ok, _activity} <- ActivityPub.follow(follower, followee) do
+    with {:fetch_user, %User{} = followee} <- {:fetch_user, User.get_cached_by_id(id)},
+         {:ok, _follower, _followee, _activity} <- CommonAPI.follow(user, followee) do
       conn
       |> render("followed.html", %{error: false})
     else
       # Was already following user
       {:error, "Could not follow user:" <> _rest} ->
-        conn
-        |> render("followed.html", %{error: false})
+        render(conn, "followed.html", %{error: "Error following account"})
+
+      {:fetch_user, error} ->
+        Logger.debug("Remote follow failed with error #{inspect(error)}")
+        render(conn, "followed.html", %{error: "Could not find user"})
 
       e ->
         Logger.debug("Remote follow failed with error #{inspect(e)}")
-
-        conn
-        |> render("followed.html", %{error: inspect(e)})
+        render(conn, "followed.html", %{error: "Something went wrong."})
     end
   end
 
@@ -152,67 +153,70 @@ defmodule Pleroma.Web.TwitterAPI.UtilController do
     end
   end
 
-  def config(conn, _params) do
+  def config(%{assigns: %{format: "xml"}} = conn, _params) do
     instance = Pleroma.Config.get(:instance)
 
-    case get_format(conn) do
-      "xml" ->
-        response = """
-        <config>
-          <site>
-            <name>#{Keyword.get(instance, :name)}</name>
-            <site>#{Web.base_url()}</site>
-            <textlimit>#{Keyword.get(instance, :limit)}</textlimit>
-            <closed>#{!Keyword.get(instance, :registrations_open)}</closed>
-          </site>
-        </config>
-        """
+    response = """
+    <config>
+    <site>
+    <name>#{Keyword.get(instance, :name)}</name>
+    <site>#{Web.base_url()}</site>
+    <textlimit>#{Keyword.get(instance, :limit)}</textlimit>
+    <closed>#{!Keyword.get(instance, :registrations_open)}</closed>
+    </site>
+    </config>
+    """
 
-        conn
-        |> put_resp_content_type("application/xml")
-        |> send_resp(200, response)
+    conn
+    |> put_resp_content_type("application/xml")
+    |> send_resp(200, response)
+  end
 
-      _ ->
-        vapid_public_key = Keyword.get(Pleroma.Web.Push.vapid_config(), :public_key)
-
-        uploadlimit = %{
-          uploadlimit: to_string(Keyword.get(instance, :upload_limit)),
-          avatarlimit: to_string(Keyword.get(instance, :avatar_upload_limit)),
-          backgroundlimit: to_string(Keyword.get(instance, :background_upload_limit)),
-          bannerlimit: to_string(Keyword.get(instance, :banner_upload_limit))
-        }
-
-        data = %{
-          name: Keyword.get(instance, :name),
-          description: Keyword.get(instance, :description),
-          server: Web.base_url(),
-          textlimit: to_string(Keyword.get(instance, :limit)),
-          uploadlimit: uploadlimit,
-          closed: if(Keyword.get(instance, :registrations_open), do: "0", else: "1"),
-          private: if(Keyword.get(instance, :public, true), do: "0", else: "1"),
-          vapidPublicKey: vapid_public_key,
-          accountActivationRequired:
-            if(Keyword.get(instance, :account_activation_required, false), do: "1", else: "0"),
-          invitesEnabled: if(Keyword.get(instance, :invites_enabled, false), do: "1", else: "0"),
-          safeDMMentionsEnabled:
-            if(Pleroma.Config.get([:instance, :safe_dm_mentions]), do: "1", else: "0")
-        }
+  def config(conn, _params) do
+    instance = Pleroma.Config.get(:instance)
 
+    vapid_public_key = Keyword.get(Pleroma.Web.Push.vapid_config(), :public_key)
+
+    uploadlimit = %{
+      uploadlimit: to_string(Keyword.get(instance, :upload_limit)),
+      avatarlimit: to_string(Keyword.get(instance, :avatar_upload_limit)),
+      backgroundlimit: to_string(Keyword.get(instance, :background_upload_limit)),
+      bannerlimit: to_string(Keyword.get(instance, :banner_upload_limit))
+    }
+
+    data = %{
+      name: Keyword.get(instance, :name),
+      description: Keyword.get(instance, :description),
+      server: Web.base_url(),
+      textlimit: to_string(Keyword.get(instance, :limit)),
+      uploadlimit: uploadlimit,
+      closed: bool_to_val(Keyword.get(instance, :registrations_open), "0", "1"),
+      private: bool_to_val(Keyword.get(instance, :public, true), "0", "1"),
+      vapidPublicKey: vapid_public_key,
+      accountActivationRequired:
+        bool_to_val(Keyword.get(instance, :account_activation_required, false)),
+      invitesEnabled: bool_to_val(Keyword.get(instance, :invites_enabled, false)),
+      safeDMMentionsEnabled: bool_to_val(Pleroma.Config.get([:instance, :safe_dm_mentions]))
+    }
+
+    managed_config = Keyword.get(instance, :managed_config)
+
+    data =
+      if managed_config do
         pleroma_fe = Pleroma.Config.get([:frontend_configurations, :pleroma_fe])
+        Map.put(data, "pleromafe", pleroma_fe)
+      else
+        data
+      end
 
-        managed_config = Keyword.get(instance, :managed_config)
-
-        data =
-          if managed_config do
-            data |> Map.put("pleromafe", pleroma_fe)
-          else
-            data
-          end
-
-        json(conn, %{site: data})
-    end
+    json(conn, %{site: data})
   end
 
+  defp bool_to_val(true), do: "1"
+  defp bool_to_val(_), do: "0"
+  defp bool_to_val(true, val, _), do: val
+  defp bool_to_val(_, _, val), do: val
+
   def frontend_configurations(conn, _params) do
     config =
       Pleroma.Config.get(:frontend_configurations, %{})
@@ -221,20 +225,16 @@ defmodule Pleroma.Web.TwitterAPI.UtilController do
     json(conn, config)
   end
 
-  def version(conn, _params) do
+  def version(%{assigns: %{format: "xml"}} = conn, _params) do
     version = Pleroma.Application.named_version()
 
-    case get_format(conn) do
-      "xml" ->
-        response = "<version>#{version}</version>"
-
-        conn
-        |> put_resp_content_type("application/xml")
-        |> send_resp(200, response)
+    conn
+    |> put_resp_content_type("application/xml")
+    |> send_resp(200, "<version>#{version}</version>")
+  end
 
-      _ ->
-        json(conn, version)
-    end
+  def version(conn, _params) do
+    json(conn, Pleroma.Application.named_version())
   end
 
   def emoji(conn, _params) do
diff --git a/lib/pleroma/web/twitter_api/twitter_api.ex b/lib/pleroma/web/twitter_api/twitter_api.ex
index bb5dda204..80082ea84 100644
--- a/lib/pleroma/web/twitter_api/twitter_api.ex
+++ b/lib/pleroma/web/twitter_api/twitter_api.ex
@@ -15,6 +15,8 @@ defmodule Pleroma.Web.TwitterAPI.TwitterAPI do
 
   import Ecto.Query
 
+  require Pleroma.Constants
+
   def create_status(%User{} = user, %{"status" => _} = data) do
     CommonAPI.post(user, data)
   end
@@ -286,7 +288,7 @@ defmodule Pleroma.Web.TwitterAPI.TwitterAPI do
       from(
         [a, o] in Activity.with_preloaded_object(Activity),
         where: fragment("?->>'type' = 'Create'", a.data),
-        where: "https://www.w3.org/ns/activitystreams#Public" in a.recipients,
+        where: ^Pleroma.Constants.as_public() in a.recipients,
         where:
           fragment(
             "to_tsvector('english', ?->>'content') @@ plainto_tsquery('english', ?)",
diff --git a/lib/pleroma/web/twitter_api/views/activity_view.ex b/lib/pleroma/web/twitter_api/views/activity_view.ex
index e84af84dc..abae63877 100644
--- a/lib/pleroma/web/twitter_api/views/activity_view.ex
+++ b/lib/pleroma/web/twitter_api/views/activity_view.ex
@@ -19,6 +19,7 @@ defmodule Pleroma.Web.TwitterAPI.ActivityView do
 
   import Ecto.Query
   require Logger
+  require Pleroma.Constants
 
   defp query_context_ids([]), do: []
 
@@ -91,7 +92,7 @@ defmodule Pleroma.Web.TwitterAPI.ActivityView do
       String.ends_with?(ap_id, "/followers") ->
         nil
 
-      ap_id == "https://www.w3.org/ns/activitystreams#Public" ->
+      ap_id == Pleroma.Constants.as_public() ->
         nil
 
       user = User.get_cached_by_ap_id(ap_id) ->
diff --git a/lib/pleroma/web/twitter_api/views/notification_view.ex b/lib/pleroma/web/twitter_api/views/notification_view.ex
index e7c7a7496..085cd5aa3 100644
--- a/lib/pleroma/web/twitter_api/views/notification_view.ex
+++ b/lib/pleroma/web/twitter_api/views/notification_view.ex
@@ -10,6 +10,8 @@ defmodule Pleroma.Web.TwitterAPI.NotificationView do
   alias Pleroma.Web.TwitterAPI.ActivityView
   alias Pleroma.Web.TwitterAPI.UserView
 
+  require Pleroma.Constants
+
   defp get_user(ap_id, opts) do
     cond do
       user = opts[:users][ap_id] ->
@@ -18,7 +20,7 @@ defmodule Pleroma.Web.TwitterAPI.NotificationView do
       String.ends_with?(ap_id, "/followers") ->
         nil
 
-      ap_id == "https://www.w3.org/ns/activitystreams#Public" ->
+      ap_id == Pleroma.Constants.as_public() ->
         nil
 
       true ->
diff --git a/lib/pleroma/web/twitter_api/views/user_view.ex b/lib/pleroma/web/twitter_api/views/user_view.ex
index 8d8892068..8a7d2fc72 100644
--- a/lib/pleroma/web/twitter_api/views/user_view.ex
+++ b/lib/pleroma/web/twitter_api/views/user_view.ex
@@ -74,12 +74,15 @@ defmodule Pleroma.Web.TwitterAPI.UserView do
       |> HTML.filter_tags(User.html_filter_policy(for_user))
       |> Formatter.emojify(emoji)
 
-    # ``fields`` is an array of mastodon profile field, containing ``{"name": "…", "value": "…"}``.
-    # For example: [{"name": "Pronoun", "value": "she/her"}, …]
     fields =
-      (user.info.source_data["attachment"] || [])
-      |> Enum.filter(fn %{"type" => t} -> t == "PropertyValue" end)
-      |> Enum.map(fn fields -> Map.take(fields, ["name", "value"]) end)
+      user.info
+      |> User.Info.fields()
+      |> Enum.map(fn %{"name" => name, "value" => value} ->
+        %{
+          "name" => Pleroma.HTML.strip_tags(name),
+          "value" => Pleroma.HTML.filter_tags(value, Pleroma.HTML.Scrubber.LinksOnly)
+        }
+      end)
 
     data =
       %{
diff --git a/lib/pleroma/web/views/email_view.ex b/lib/pleroma/web/views/email_view.ex
new file mode 100644
index 000000000..b506a234b
--- /dev/null
+++ b/lib/pleroma/web/views/email_view.ex
@@ -0,0 +1,15 @@
+defmodule Pleroma.Web.EmailView do
+  use Pleroma.Web, :view
+  import Phoenix.HTML
+  import Phoenix.HTML.Link
+
+  def avatar_url(user) do
+    Pleroma.User.avatar_url(user)
+  end
+
+  def format_date(date) when is_binary(date) do
+    date
+    |> Timex.parse!("{ISO:Extended:Z}")
+    |> Timex.format!("{Mshort} {D}, {YYYY} {h24}:{m}")
+  end
+end
diff --git a/lib/pleroma/web/views/mailer/subscription_view.ex b/lib/pleroma/web/views/mailer/subscription_view.ex
new file mode 100644
index 000000000..fc3d20816
--- /dev/null
+++ b/lib/pleroma/web/views/mailer/subscription_view.ex
@@ -0,0 +1,3 @@
+defmodule Pleroma.Web.Mailer.SubscriptionView do
+  use Pleroma.Web, :view
+end
diff --git a/lib/pleroma/web/web.ex b/lib/pleroma/web/web.ex
index b42f6887e..bfb6c7287 100644
--- a/lib/pleroma/web/web.ex
+++ b/lib/pleroma/web/web.ex
@@ -58,17 +58,31 @@ defmodule Pleroma.Web do
       rescue
         error ->
           Logger.error(
-            "#{__MODULE__} failed to render #{inspect({view, template})}: #{inspect(error)}"
+            "#{__MODULE__} failed to render #{inspect({view, template})}\n" <>
+              Exception.format(:error, error, __STACKTRACE__)
           )
 
-          Logger.error(inspect(__STACKTRACE__))
           nil
       end
 
       @doc """
-      Same as `render_many/4` but wrapped in rescue block.
+      Same as `render_many/4` but wrapped in rescue block and parallelized (unless disabled by passing false as a fifth argument).
       """
-      def safe_render_many(collection, view, template, assigns \\ %{}) do
+      def safe_render_many(collection, view, template, assigns \\ %{}, parallel \\ true)
+
+      def safe_render_many(collection, view, template, assigns, true) do
+        Enum.map(collection, fn resource ->
+          Task.async(fn ->
+            as = Map.get(assigns, :as) || view.__resource__
+            assigns = Map.put(assigns, as, resource)
+            safe_render(view, template, assigns)
+          end)
+        end)
+        |> Enum.map(&Task.await(&1, :infinity))
+        |> Enum.filter(& &1)
+      end
+
+      def safe_render_many(collection, view, template, assigns, false) do
         Enum.map(collection, fn resource ->
           as = Map.get(assigns, :as) || view.__resource__
           assigns = Map.put(assigns, as, resource)
diff --git a/lib/pleroma/web/web_finger/web_finger.ex b/lib/pleroma/web/web_finger/web_finger.ex
index fa34c7ced..ecb39ee50 100644
--- a/lib/pleroma/web/web_finger/web_finger.ex
+++ b/lib/pleroma/web/web_finger/web_finger.ex
@@ -86,11 +86,17 @@ defmodule Pleroma.Web.WebFinger do
     |> XmlBuilder.to_doc()
   end
 
-  defp get_magic_key(magic_key) do
-    "data:application/magic-public-key," <> magic_key = magic_key
+  defp get_magic_key("data:application/magic-public-key," <> magic_key) do
     {:ok, magic_key}
-  rescue
-    MatchError -> {:error, "Missing magic key data."}
+  end
+
+  defp get_magic_key(nil) do
+    Logger.debug("Undefined magic key.")
+    {:ok, nil}
+  end
+
+  defp get_magic_key(_) do
+    {:error, "Missing magic key data."}
   end
 
   defp webfinger_from_xml(doc) do
@@ -187,6 +193,7 @@ defmodule Pleroma.Web.WebFinger do
     end
   end
 
+  @spec finger(String.t()) :: {:ok, map()} | {:error, any()}
   def finger(account) do
     account = String.trim_leading(account, "@")
 
@@ -220,8 +227,6 @@ defmodule Pleroma.Web.WebFinger do
       else
         with {:ok, doc} <- Jason.decode(body) do
           webfinger_from_json(doc)
-        else
-          {:error, e} -> e
         end
       end
     else
diff --git a/lib/pleroma/web/web_finger/web_finger_controller.ex b/lib/pleroma/web/web_finger/web_finger_controller.ex
index b77c75ec5..896eb15f9 100644
--- a/lib/pleroma/web/web_finger/web_finger_controller.ex
+++ b/lib/pleroma/web/web_finger/web_finger_controller.ex
@@ -7,6 +7,7 @@ defmodule Pleroma.Web.WebFinger.WebFingerController do
 
   alias Pleroma.Web.WebFinger
 
+  plug(Pleroma.Plugs.SetFormatPlug)
   plug(Pleroma.Web.FederatingPlug)
 
   def host_meta(conn, _params) do
@@ -17,30 +18,28 @@ defmodule Pleroma.Web.WebFinger.WebFingerController do
     |> send_resp(200, xml)
   end
 
-  def webfinger(conn, %{"resource" => resource}) do
-    case get_format(conn) do
-      n when n in ["xml", "xrd+xml"] ->
-        with {:ok, response} <- WebFinger.webfinger(resource, "XML") do
-          conn
-          |> put_resp_content_type("application/xrd+xml")
-          |> send_resp(200, response)
-        else
-          _e -> send_resp(conn, 404, "Couldn't find user")
-        end
-
-      n when n in ["json", "jrd+json"] ->
-        with {:ok, response} <- WebFinger.webfinger(resource, "JSON") do
-          json(conn, response)
-        else
-          _e -> send_resp(conn, 404, "Couldn't find user")
-        end
-
-      _ ->
-        send_resp(conn, 404, "Unsupported format")
+  def webfinger(%{assigns: %{format: format}} = conn, %{"resource" => resource})
+      when format in ["xml", "xrd+xml"] do
+    with {:ok, response} <- WebFinger.webfinger(resource, "XML") do
+      conn
+      |> put_resp_content_type("application/xrd+xml")
+      |> send_resp(200, response)
+    else
+      _e -> send_resp(conn, 404, "Couldn't find user")
     end
   end
 
-  def webfinger(conn, _params) do
-    send_resp(conn, 400, "Bad Request")
+  def webfinger(%{assigns: %{format: format}} = conn, %{"resource" => resource})
+      when format in ["json", "jrd+json"] do
+    with {:ok, response} <- WebFinger.webfinger(resource, "JSON") do
+      json(conn, response)
+    else
+      _e ->
+        conn
+        |> put_status(404)
+        |> json("Couldn't find user")
+    end
   end
+
+  def webfinger(conn, _params), do: send_resp(conn, 400, "Bad Request")
 end