I've actually been thinking a lot about this in the past month. I too am transitioning away from Google-everything for various reasons. I only use Gmail via I

I've actually been thinking a lot about this in the past month. I too am transitioning away from Google-everything for various reasons. I only use Gmail via IMAP in Thunderbird, so I've already migrated my address book and calendar to self-hosted webDAV, which was shockingly easy. The last thing to switch over is Gmail. I used to run a mail server in the past so I know what a pain in the ass it is. I was thinking that something very useful would be some sort of big Bash script that would install and configure webDAV and a mail server using existing packages with smart defaults, specifically for individuals hosting their own personal mail. Kind of like an owncloud, but for address books/calendar/email and using existing packages. I'll see if I can think of this further once I actually sit down and start running my own mail server again. Anyone with thoughts or suggestions is welcomed to drop me a line :)