diff --git a/src/server/BreCal/notifications/notifier.py b/src/server/BreCal/notifications/notifier.py
index 4e38d7e..1e100c2 100644
--- a/src/server/BreCal/notifications/notifier.py
+++ b/src/server/BreCal/notifications/notifier.py
@@ -415,6 +415,9 @@ class Notifier():
         # additionally, always inform the BSMD
         email_tgts.append("bremencalling@bsmd.de") # #TODO: for testing, use "bremencalling@bsmd.de". For live system, use "report@bsmd.de"
 
+        # #TODO_development: overwrite the recipients. Only send to 'bremencalling@bsmd.de' until the testing phase has succeeded.
+        email_tgts = ["bremencalling@bsmd.de" for tgt in email_tgts]
+
         # avoid multi-mails, when (for some reason) multiple users share the same email address. 
         email_tgts = list(set(email_tgts))
         return email_tgts