diff --git a/poweremail_core.py b/poweremail_core.py
index ed25548..a0a9ec2 100644
--- a/poweremail_core.py
+++ b/poweremail_core.py
@@ -562,7 +562,7 @@ def parse_sender(pem_account, pem_addresses):
                 host=account.smtpserver,
                 port=account.smtpport,
                 user=account.smtpuname,
-                passwd=account.smtppass,
+                passwd=str(account.smtppass),
                 tls=account.smtptls,
                 ssl=account.smtpssl
             ):