diff --git a/Pepipost/Controllers/MailSendController.cs b/Pepipost/Controllers/MailSendController.cs
index 36f85aa..89ec5d1 100644
--- a/Pepipost/Controllers/MailSendController.cs
+++ b/Pepipost/Controllers/MailSendController.cs
@@ -76,7 +76,7 @@ public async Task<object> CreateGeneratethemailsendrequestAsync(Models.Send body
 
             if (string.IsNullOrWhiteSpace(url))
             {
-                _queryBuilder.Append("/mail/send");
+                _queryBuilder.Append($"{_baseUri}/mail/send");
             }
             else
             {