FEAT: add suffix on email

src/modules/mixpanel/mixpanel.controller.ts

@@ -60,7 +60,9 @@ export class MixpanelController {
       $first_name: firstName,
       $last_name: lastName,
       $name: this.getFullName(firstName, lastName),
-      $email: user.username,
+      $email: user.username.includes('@')
+        ? user.username
+        : user.username + '@dadosfera.ai',
       customer_name: user.customer_name,
     });