I've been running my own for years. On a VPS now. With SPF and DKIM my delivery rate is awesome. I host domain mail and send two large-ish newsletters (~4k each

I've been running my own for years. On a VPS now. With SPF and DKIM my delivery rate is awesome. I host domain mail and send two large-ish newsletters (~4k each). Postfix, OpenDKIM, Dovecot in Linked. Granted, takes a bit to set up. Up-side is full control. I have a robust black-list too, keeps loads of spam from even entering the syatem