Alternatives to docker-mailserver
A complete mail server with SMTP, IMAP, antispam and antivirus, packaged as a single container. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
docker-mailserver
A complete mail server with SMTP, IMAP, antispam and antivirus, packaged as a single container.
Replacements
Listings that take over the same core job as docker-mailserver.
Mailu
A full-featured self-hosted mail server delivered as a set of Docker images.
Mailu is also a Docker-based mail server but adds webmail and a web admin panel with per-domain quotas, though releases are infrequent.
Mox
An all-in-one open-source mail server for low-maintenance self-hosted email.
Mox replaces the container stack with a single program handling SMTP, IMAP and webmail with automatic TLS, but is younger and less widely deployed.
Cyrus IMAP
An open-source email, contacts and calendar server with IMAP, JMAP, CalDAV and CardDAV support.
Cyrus IMAP adds calendars, contacts and JMAP with replication for large sites, but is complex to configure and needs a separate MTA setup.
Also worth comparing
These listings name docker-mailserver as their own alternative, so the relationship runs both ways.
Dovecot
An open-source IMAP and POP3 server that stores mailboxes and serves them to mail clients.
docker-mailserver packages IMAP, SMTP, antispam and antivirus in a single container, but offers no webmail or graphical admin interface.
Similar software
Related functionality, not a direct replacement.
Postfix
A widely used open-source mail transfer agent for routing and delivering email.
Exim
An open-source mail transfer agent for Unix systems with flexible routing and mail checking.
OpenSMTPD
A free SMTP server from the OpenBSD project for sending and receiving email.
Google Postmaster Tools
Google's web dashboard for checking a sending domain's reputation and mail deliverability to Gmail.
