I made my own mailserver. Completely native python. Exchange functionality so integrates with phone well. It's completely file based. Have it a week in production and no issues so far.

Mail setups are normally scary as fuck. It's often a spaghetti of applications. Terror pasta. Mine is a nice monolith and actually the most easy to use. It does not provide a web interface for composing emails. There are plenty of those that will work with this server.

It's 2026 and we're building a mailserver. Innovation.