diff --git a/lib/mix/tasks/deactivate_user.ex b/lib/mix/tasks/deactivate_user.ex
new file mode 100644
index 000000000..96b3db6e4
--- /dev/null
+++ b/lib/mix/tasks/deactivate_user.ex
@@ -0,0 +1,13 @@
+defmodule Mix.Tasks.DeactivateUser do
+  use Mix.Task
+  alias Pleroma.User
+
+  @shortdoc "Toggle deactivation status for a user"
+  def run([nickname]) do
+    Mix.Task.run("app.start")
+
+    with user <- User.get_by_nickname(nickname) do
+      User.deactivate(user)
+    end
+  end
+end
diff --git a/lib/pleroma/web/activity_pub/activity_pub.ex b/lib/pleroma/web/activity_pub/activity_pub.ex
index 3e1977f96..973d18e52 100644
--- a/lib/pleroma/web/activity_pub/activity_pub.ex
+++ b/lib/pleroma/web/activity_pub/activity_pub.ex
@@ -16,9 +16,23 @@ def get_recipients(data) do
     (data["to"] || []) ++ (data["cc"] || [])
   end
 
+  defp check_actor_is_active(actor) do
+    if not is_nil(actor) do
+      with user <- User.get_cached_by_ap_id(actor),
+           nil <- user.info["deactivated"] do
+        :ok
+      else
+        _e -> :reject
+      end
+    else
+      :ok
+    end
+  end
+
   def insert(map, local \\ true) when is_map(map) do
     with nil <- Activity.get_by_ap_id(map["id"]),
          map <- lazy_put_activity_defaults(map),
+         :ok <- check_actor_is_active(map["actor"]),
          {:ok, map} <- MRF.filter(map),
          :ok <- insert_full_object(map) do
       {:ok, activity} =