I've been running my own email server for 30 years now, and expect to another 30 years.
Please, please, make email obsolete!
Discussion
Email is the worst protocol to survive the early internet.
What are you using to do this?
Ive done it all. Started out with sendmail, moved to qmail after a few years, then courier, then exim and finally postfix with dovecot. Also administered a few microsoft exchange servers along the way.
lol
E-Mail has survived as long as it has because it is an open standard, and because it is federated. If anything can kill it, Nostr can. Don't expect it to be quick, though. Network effects are extremely powerful. The main reason everyone uses e-mail now is because everyone uses e-mail.