diff --git a/app/config.py b/app/config.py
index ff54a834..3350920a 100644
--- a/app/config.py
+++ b/app/config.py
@@ -350,5 +350,8 @@ if PGP_SENDER_PRIVATE_KEY_PATH:
     with open(get_abs_path(PGP_SENDER_PRIVATE_KEY_PATH)) as f:
         PGP_SENDER_PRIVATE_KEY = f.read()
 
-# the signer address that signes outgoing encrypted emails
+# the signer address that signs outgoing encrypted emails
 PGP_SIGNER = os.environ.get("PGP_SIGNER")
+
+# emails that have empty From address is sent from this special reverse-alias
+NOREPLY = os.environ.get("NOREPLY", f"noreply@{EMAIL_DOMAIN}")