diff --git a/contrib/uwsgi-sogs-standalone.ini b/contrib/uwsgi-sogs-standalone.ini
index 16a7f977..83c07141 100644
--- a/contrib/uwsgi-sogs-standalone.ini
+++ b/contrib/uwsgi-sogs-standalone.ini
@@ -25,7 +25,7 @@ gid = GROUP
 plugins = python3,http
 processes = 2
 enable-threads = true
-http = :80
+http-socket = [::]:80
 mount = /=sogs.web:app
 mule = sogs.mule:run
 log-4xx = true
diff --git a/sogs/model/room.py b/sogs/model/room.py
index 7217b116..ed8540dd 100644
--- a/sogs/model/room.py
+++ b/sogs/model/room.py
@@ -1243,6 +1243,49 @@ def delete_all_posts(self, poster: User, *, deleter: User):
 
         return len(deleted), files_removed
 
+    def delete_all_user_reactions(self, poster: User, *, deleter: User):
+        """
+        Delete all emoji reactions placed on messages in the room by `poster`.
+        `deleter` must be a moderator if not deleting his/her own reactions, and
+        must be an `admin` if trying to delete all of the posts of another admin.
+        """
+
+        fail = None
+        if poster.id != deleter.id and not self.check_moderator(deleter):
+            fail = "user is not a moderator"
+        elif self.check_admin(poster) and not self.check_admin(deleter):
+            fail = "only admins can delete all reactions of another admin"
+
+        if fail is not None:
+            app.logger.warning(
+                f"Error deleting all reactions by {poster} from {self} by {deleter}: {fail}"
+            )
+            raise BadPermission()
+
+        with db.transaction():
+            deleted = [
+                r[0]
+                for r in query(
+                    'SELECT reaction FROM user_reactions WHERE "user" = :u AND reaction IN (SELECT id FROM reactions WHERE message IN (SELECT id FROM messages WHERE room = :r))',
+                    r=self.id,
+                    u=poster.id,
+                )
+            ]
+
+            query(
+                'DELETE FROM user_reactions WHERE "user" = :u AND reaction IN (SELECT id FROM reactions WHERE message IN (SELECT id FROM messages WHERE room = :r))',
+                r=self.id,
+                u=poster.id,
+            )
+
+        # FIXME: send `deleted` to mule
+
+        app.logger.debug(
+            f"Delete all reactions by {poster} from {self}: {len(deleted)} reactions"
+        )
+
+        return len(deleted)
+
     def attachments_size(self):
         """Returns the number and aggregate size of attachments currently stored in this room"""
         return query(
diff --git a/sogs/routes/rooms.py b/sogs/routes/rooms.py
index 4487a71b..fbefcb68 100644
--- a/sogs/routes/rooms.py
+++ b/sogs/routes/rooms.py
@@ -990,3 +990,58 @@ def delete_user_posts_from_all_rooms(sid):
             pass
 
     return jsonify({"total": total, "rooms": deletions})
+
+
+@rooms.delete("/room/<Room:room>/all/reactions/<SessionID:sid>")
+def delete_all_reactions(room, sid):
+    """
+    Deletes all emoji reactions placed by a user in a room
+
+    # URL Parameters
+
+    - `sid` — the session id of the user whose reactions are to be deleted
+
+    # Return value
+
+    An empty json object is returned.
+
+    # Error status codes
+
+    - 403 Forbidden — if the invoking user does not have access to the room.
+    - 404 Not Found — if the user we are deleting posts from made no posts in this room.
+    """
+    user = muser.User(session_id=sid, autovivify=False)
+    deleted = room.delete_all_user_reactions(user, deleter=g.user)
+    if not deleted:
+        abort(http.NOT_FOUND)
+    return jsonify({})
+
+
+@rooms.delete("/rooms/all/reactions/<SessionID:sid>")
+def delete_user_reactions_from_all_rooms(sid):
+    """
+    Deletes all emoji reactions by a given user from all rooms.
+
+    # URL Parameters
+
+    - `sid` — the session id of the user whose reactions are to be deleted
+
+    # Return value
+
+    A JSON dict with the keys:
+
+    - `total` — The total number of reactions deleted across all rooms.
+    - `messages` — A dict of room tokens and their deletion counts.
+    """
+    deletions = {}
+    total = 0
+    user = muser.User(session_id=sid, autovivify=False)
+    for room in mroom.get_accessible_rooms(g.user):
+        try:
+            count = room.delete_all_user_reactions(user, deleter=g.user)
+            total += count
+            deletions[room.token] = count
+        except exc.BadPermission:
+            pass
+
+    return jsonify({"total": total, "messages": deletions})