Apps similar to Docker Mailserver include mailcow: dockerized, which is free and open source. Other options are Mail-in-a-box, Stalwart and Mailu. In total there are four Mail Servers like Docker Mailserver for self-hosting, Linux, Mac and Windows.
mailcow is a mail server suite based on Dovecot, Postfix, SOGo, Rspamd and other open source software, that provides a modern Web UI for administration.
Germany
EU
United States
Stalwart is an open-core mail server solution with JMAP, IMAP4, POP3, and SMTP support and a wide range of modern features. It is written in Rust and designed to be secure, fast, robust and scalable.
United States
Mailu is a simple yet full-featured mail server as a set of Docker images. It is free software (both as in free beer and as in free speech), open to suggestions and external contributions.
