diff --git a/blueprints/tasks.py b/blueprints/tasks.py
index 880bf0e..d2545dc 100644
--- a/blueprints/tasks.py
+++ b/blueprints/tasks.py
@@ -32,9 +32,9 @@ from core.meta import MetaKey
 from core.meta import by_object_id
 from core.meta import by_remote_id
 from core.meta import by_type
-from core.meta import flag
 from core.meta import inc
 from core.meta import upsert
+from core.notifications import _NewMeta
 from core.notifications import set_inbox_flags
 from core.outbox import process_outbox
 from core.remote import track_failed_send
@@ -44,7 +44,6 @@ from core.shared import _Response
 from core.shared import back
 from core.shared import p
 from core.tasks import Tasks
-from utils import now
 from utils import opengraph
 from utils.media import is_video
 
@@ -643,12 +642,7 @@ def task_process_new_activity() -> _Response:
         activity = ap.fetch_remote_activity(iri)
         app.logger.info(f"activity={activity!r}")
 
-        flags = {}
-
-        if not activity.published:
-            flags.update(flag(MetaKey.PUBLISHED, now()))
-        else:
-            flags.update(flag(MetaKey.PUBLISHED, activity.published))
+        flags: _NewMeta = {}
 
         set_inbox_flags(activity, flags)
         app.logger.info(f"a={activity}, flags={flags!r}")
diff --git a/core/activitypub.py b/core/activitypub.py
index e43653c..2559f71 100644
--- a/core/activitypub.py
+++ b/core/activitypub.py
@@ -123,15 +123,18 @@ def save(box: Box, activity: ap.BaseActivity) -> None:
             "type": _to_list(activity.type),
             "remote_id": activity.id,
             "meta": {
-                "undo": False,
-                "deleted": False,
-                "public": is_public,
-                "server": urlparse(activity.id).netloc,
-                "visibility": visibility.name,
-                "actor_id": actor_id,
-                "object_id": object_id,
-                "object_visibility": object_visibility,
-                "poll_answer": False,
+                MetaKey.UNDO.value: False,
+                MetaKey.DELETED.value: False,
+                MetaKey.PUBLIC.value: is_public,
+                MetaKey.SERVER.value: urlparse(activity.id).netloc,
+                MetaKey.VISIBILITY.value: visibility.name,
+                MetaKey.ACTOR_ID.value: actor_id,
+                MetaKey.OBJECT_ID.value: object_id,
+                MetaKey.OBJECT_VISIBILITY.value: object_visibility,
+                MetaKey.POLL_ANSWER.value: False,
+                MetaKey.PUBLISHED.value: activity.published
+                if activity.published
+                else now(),
             },
         }
     )
diff --git a/core/meta.py b/core/meta.py
index 2b51346..6a6ccef 100644
--- a/core/meta.py
+++ b/core/meta.py
@@ -39,6 +39,10 @@ class MetaKey(Enum):
     PUBLIC = "public"
     THREAD_ROOT_PARENT = "thread_root_parent"
 
+    SERVER = "server"
+    VISIBILITY = "visibility"
+    OBJECT_VISIBILITY = "object_visibility"
+
     DELETED = "deleted"
     BOOSTED = "boosted"
     LIKED = "liked"