I run my own personal SMTP and IMAP server and haven't found it too hard to maintain after the initial setup phase. The main problem I had with getting emails a

I run my own personal SMTP and IMAP server and haven't found it too hard to maintain after the initial setup phase. The main problem I had with getting emails accepted was my lack of reverse DNS PTR records on my domain. If you're unable to fix that (eg, you're not using a commericial internet connection that allows this) the solution is just to use another SMTP relay service. Some, like SMTP2go, are free if you're only sending a personal-use number of emails a day/month. That way you're still in charge of everything except the relaying of outgoing mail, which is easy enough to swap out.