Regarding hardware-assisted self hosting, there is http://internetcu.be which, among other things, does email (and bypasses ISPs restrictions by bundling the "box" with a VPN and providing static IPv4 and 6 addresses to each user).
It's some sort of "freedombox" [0] come true. It works out of the box, in a plug and play fashion (and it's based on free hardware [1] and free software [2]).
It's some sort of "freedombox" [0] come true. It works out of the box, in a plug and play fashion (and it's based on free hardware [1] and free software [2]).
[0] https://en.wikipedia.org/wiki/FreedomBox
[1] https://www.olimex.com/Products/OLinuXino/A20/A20-OLinuXino-...
[2] Debian, https://yunohost.org ,...