diff --git a/app/email.py b/app/email.py
index c5dad27e..1bb93c8e 100644
--- a/app/email.py
+++ b/app/email.py
@@ -145,7 +145,7 @@ def send_email(request):
       sender = request.data.get('sender')
   
   # send email
-  result = send_via_zeptomail(receiver, subject, content, sender)
+  result = send_one_by_one(receiver, subject, content, sender)
 
   if result:
     return Response({'message': 'Send success'}, status=200)