I use iredmail for my personal server. It does the work of configuring postfix and dovecot for you and allows you to make any changes you wish. I host it on dig

I use iredmail for my personal server. It does the work of configuring postfix and dovecot for you and allows you to make any changes you wish. I host it on digital ocean. Still I think this could be a interesting idea, you'd have to change the way we think about email, but everyone having their own dedicated, always on device rather the google holding on to all of them has to have an impact on privacy.