diff --git a/app/dashboard/views/custom_alias.py b/app/dashboard/views/custom_alias.py
index e0f7e7da..cdea83fc 100644
--- a/app/dashboard/views/custom_alias.py
+++ b/app/dashboard/views/custom_alias.py
@@ -43,9 +43,7 @@ def custom_alias():
             )
         )
 
-    mailboxes = [current_user.email]
-    for mailbox in Mailbox.query.filter_by(user_id=current_user.id, verified=True):
-        mailboxes.append(mailbox.email)
+    mailboxes = current_user.mailboxes()
 
     if request.method == "POST":
         alias_prefix = request.form.get("prefix")
diff --git a/app/models.py b/app/models.py
index 344d23e8..1de69fa1 100644
--- a/app/models.py
+++ b/app/models.py
@@ -278,6 +278,18 @@ class User(db.Model, ModelMixin, UserMixin):
     def verified_custom_domains(self):
         return CustomDomain.query.filter_by(user_id=self.id, verified=True).all()
 
+    def mailboxes(self) -> [str]:
+        """list of mailbox emails that user own"""
+        if self.full_mailbox:
+            mailboxes = []
+        else:
+            mailboxes = [self.email]
+
+        for mailbox in Mailbox.query.filter_by(user_id=self.id, verified=True):
+            mailboxes.append(mailbox.email)
+
+        return mailboxes
+
     def __repr__(self):
         return f"<User {self.id} {self.name} {self.email}>"