diff --git a/main.py b/main.py
index 212a463..0fe82c2 100644
--- a/main.py
+++ b/main.py
@@ -89,8 +89,8 @@ def get_unforwarded_emails(account_config, logger):
             if isinstance(response_part, tuple):
                 msg = email.message_from_bytes(response_part[1])
                 emails.append((email_id, msg))
-        imap.store(email_id, '+FLAGS', '\Seen')
-        
+        imap.store(email_id, '+FLAGS', '\\Seen')
+
     imap.logout()
     if len(emails) > 0:
         logger.info(f"Retrieved {len(emails)} new emails from {account_config['email']}")