Hi,
Unfortunatly phpmailer (external library used by epesi to send mails) hadn't TLS support when we started to develop epesi. We updated it, but no one has checked if it already has TLS support. It supports it now, so we can extend mailclient with that option. Check out next release soon.
You can change default port by setting server address to something like this "some.smtp.com:587".
Here are my settings for getting mail from google account:
Mail address <...cut...antispam...>@gmail.com
Login shacky7
Password **********
Incoming protocol IMAP
Incoming server address imap.gmail.com
Receive with SSL
Regards
Paul