I ran my own mail server for a few months in 2013. I came to the conclusion I'd much rather pay Google $5 a month.
Switched to Fastmail and haven't looked back. Their Android and Web client are great and they've opened their JMAP[0] interface.
[0] http://jmap.io/
They have a very strong privacy policy, they’re not just going to hand your email over to a “random” person.
Compliance.
NDA's.
I set up my configs ~5 years ago, and other than apt-get update; apt-get dist-upgrade, I havent had to do anything