Last checked October 15, 2026
mailcow
mailcow: dockerized is a mail suite: Postfix, Dovecot with full-text search, SOGo for browser mail and contacts, and Rspamd for spam. It is the server, not a desktop app. You point a domain at it and keep the mailboxes on that machine.
Open sourceGPL-3.0Small teamsPrivacy-consciousDevelopers
WebSelf-hostLinux
Free tier
The software is free to run. You pay for the machine, DNS, and a way to send mail that other servers will accept.
Hosted
No hosted price recorded.
Self-host
Hard. Docker Compose on a Linux host, plus DNS records for the domain. The project documents IMAP, SMTP, SOGo, and Rspamd as part of the stack. About $10–20/mo for a small VPS, before you solve outbound delivery. Unverified estimate.
Drop-in scores
Sources checked
https://ditchly.co/software/mailcow