Route invitation recipients only to mail delivery

src/user_engine/adapters/delivery.py

@@ -39,7 +39,13 @@ class HTTPOutboxDeliveryAdapter:
         }
         if self.mail_url and event.event_type in _MAIL_EVENTS:
             self._post(self.mail_url, envelope)
-        self._post(self.event_url, envelope)
+        event_envelope = dict(envelope)
+        event_data = dict(envelope["data"])
+        if "primary_email" in event_data:
+            event_data["recipient_present"] = True
+            del event_data["primary_email"]
+        event_envelope["data"] = event_data
+        self._post(self.event_url, event_envelope)
 
     def _post(self, url: str, envelope: dict[str, object]) -> None:
         with urlopen(

src/user_engine/service.py

@@ -2516,6 +2516,7 @@ class UserEngineService:
                     "family_scope_id": family_scope_id,
                     "application_id": application_id,
                     "role": role,
+                    "primary_email": invitation.primary_email,
                 },
                 application_id=application_id,
             )
@@ -2574,6 +2575,7 @@ class UserEngineService:
                     "invitation_id": updated.invitation_id,
                     "user_id": updated.user_id,
                     "resend_count": updated.resend_count,
+                    "primary_email": updated.primary_email,
                 },
                 application_id=updated.application_id,
             )