diff --git a/app/listmonk/tasks.py b/app/listmonk/tasks.py
index ad8d82c..c4b8a50 100644
--- a/app/listmonk/tasks.py
+++ b/app/listmonk/tasks.py
@@ -5,6 +5,7 @@ import tempfile
 from celery.schedules import crontab
 from django.conf import settings
 from django.utils import timezone
+from django.core.cache import cache
 
 from . import utils
 from ..signalbot import rpc
@@ -22,9 +23,11 @@ def send_week():
     monday = views.get_monday(now)
     week, archive = models.Item.public(now)
     week_obj = models.Week.objects.filter(monday=monday).first()
-    if not week_obj:
+    notified_key = "week-%s-notified" % monday
+    if not week_obj and not cache.get(notified_key):
         message = "no title for week, can not send out email please add: %s/admin/item/week/add/?monday=%s" % (settings.URL, monday)
         r = rpc.send(message, group=settings.SIGNAL_MODERATORS_GROUP)
+        cache.set(notified_key, True, 24*60*60)
     elif week.filter(announced=None).exists():
         logger.error("waiting for last item of the week to be public")
     elif not week_obj.published: