diff --git a/.flaskenv b/.flaskenv
index f88b6e5b..0a7611db 100644
--- a/.flaskenv
+++ b/.flaskenv
@@ -1,2 +1,4 @@
 FLASK_APP=opaque.py
 FLASK_ENV=development
+OPAQUE_MAIL_SUBJECT_PREFIX=[Opaque]
+OPAQUE_MAIL_SENDER=Opaque Admin <inf_sfb1288@uni-bielefeld.de>