Self-hosted email solutions

Here are some good, self-hostable and all-in-one email server projects I’ve encountered.

• Mail in a box.
• Docker mail-server.
• Maddy.
• Mox - looks lightweight.
• Stalwart - again, lightweight plus modern.
• Posteo.
• Mailu.
• Mailcow.

However, in my limited experience of couple of months, there is a lot that can go wrong while self-hosting email, especially things that aren’t in your control. So, apart from intellectual curiosity or if you are getting paid, there is no good reason to go this route.