diff --git a/data/Dockerfiles/dovecot/quota_notify.py b/data/Dockerfiles/dovecot/quota_notify.py
index 2d7361b8..a5cfe844 100755
--- a/data/Dockerfiles/dovecot/quota_notify.py
+++ b/data/Dockerfiles/dovecot/quota_notify.py
@@ -2,6 +2,7 @@
 
 import smtplib
 import os
+from datetime import datetime
 from email.mime.multipart import MIMEMultipart
 from email.mime.text import MIMEText
 from email.utils import COMMASPACE, formatdate
@@ -31,6 +32,13 @@ while True:
   else:
     break
 
+now = datetime.now().toordinal()
+if r.hget('QW_TIME', username):
+  last_notified = int(r.hget('QW_TIME', username))
+  if now - last_notified == 0:
+    print(f"{username} notified recently, not sending notification.")
+    sys.exit(0)
+
 if r.get('QW_HTML'):
   try:
     template = Template(r.get('QW_HTML'))
@@ -83,6 +91,8 @@ except Exception as ex:
   print('Failed to send quota notification: %s' % (ex))
   sys.exit(1)
 
+r.hset("QW_TIME", username, now)
+
 try:
   sys.stdout.close()
 except: