I setup my own email server, it was an absolute pain to setup, especially since I had no idea about all the little details of sending and receiving email. It was kind of fun to see everything come together
In the beginning I had a ton of email go into spam boxes, especially with gmail. Later I found out that if you don't add the proper email headers like to: "Name Of Recipient" <email@example.com>
it goes straight to the spam folder. (So you always need to provide a name)
I am afraid to touch anything now though, as it is currently very really stable (on a vpn btw)
Same, still has a lot of missing features though. The one thing that would be a major improvement is to be able to open links between communities and threads. It always interprets everything as an email address for some reason. !Ask Lemmy@lemmy.world