diff --git a/frappe/email/smtp.py b/frappe/email/smtp.py
index fa6b92fc33..1794c8215d 100644
--- a/frappe/email/smtp.py
+++ b/frappe/email/smtp.py
@@ -210,7 +210,7 @@ class SMTPServer:
 				self._sess.ehlo()
 
 			if self.login and self.password:
-				ret = self._sess.login((self.login or ""), (self.password or ""))
+				ret = self._sess.login(str(self.login or ""), str(self.password or ""))
 
 				# check if logged correctly
 				if ret[0]!=235: