Comment by coaxial
8 years ago
Have you tried mailcow? I find it strikes a pretty good balance between running your own mailserver while not getting overwhelmed with details.
It runs in containers and provides a webserver, webmail, caldav, spam filter, updater... I have made an ansible role that will back up to a Borg repository every hour as well as restoring the latest backup upon installation if you need inspiration: https://galaxy.ansible.com/coaxial/mailcow/
If you use your own domain name, you can set mailcow to sync with your Gmail account so you have all your emails in mailcow and then pull the plug on Gmail without losing anything. I find it runs pretty well for me on a server with only 2gb of ram.
If you are on Windows, the equivalent is smartermail. For a fee it also supports ActiveSync, which simplifies client configuration and gives pseudo-push.