Mail docker self-hosting

Hello everyone!

Does anyone know good softwares that are available as docker installations for self-hosting a full email services stack.

I heard about mailu, mailcow:dockerized, poste.io and the recent Stalwart that’s been released quite recently.

I tried to install them, and I must say that poste.io seems quite user-friendly, though it seems that it doesn’t allow to redefine the recipient delimiter characters.

Do you happen to know about other tools that could do the same job?