diff --git a/roles/mail/files/sender_blacklist b/roles/mail/files/sender_blacklist
index 56b9974..ab0f2f8 100644
--- a/roles/mail/files/sender_blacklist
+++ b/roles/mail/files/sender_blacklist
@@ -7,5 +7,6 @@ zapingers.autos    REJECT
 cleverep.com       REJECT
 .ru                REJECT
 allsip.ru          REJECT
+clickup.com        REJECT
 sina.buffy@avantgarde-experts.de OK
 .avantgarde-experts.de OK