diff --git a/src/plugin/cursus/Manager/EventManager.php b/src/plugin/cursus/Manager/EventManager.php
index 62ab825b403..b8d9f6a9c37 100644
--- a/src/plugin/cursus/Manager/EventManager.php
+++ b/src/plugin/cursus/Manager/EventManager.php
@@ -221,7 +221,9 @@ public function addGroups(Event $event, array $groups, string $type = AbstractRe
             }
         }
 
-        $this->sendSessionEventInvitation($event, $users);
+        if ($event->getRegistrationMail()) {
+            $this->sendSessionEventInvitation($event, $users);
+        }
 
         $this->om->endFlushSuite();