OK so apparently the SublimeText author thinks "administering an email server" too much trouble & time intensive.
Kind of hard to believe... because just yesterday I needed to setup outgoing email notifications for a Couchbase cluster. On Ubuntu server it's simply
sudo apt-get install postfix
It walks you through the configuration after installing. I had a working mail server, for outbound SMTP email notifications, in literally 5 minutes including time to lookup and learn how to do it.