# mailcow/mailcow-dockerized

mailcow: dockerized - 🐮 + 🐋 = 💕

Repository: https://github.com/mailcow/mailcow-dockerized
Canonical: https://ross.abutalabs.com/products/mailcow-dockerized
Homepage: https://mailcow.email
Language: JavaScript
License: GPL-3.0
License Family: copyleft
Topics: mailcow, mailserver, groupware, sogo, rspamd, postfix, dovecot, docker, servercow, hacktoberfest, clamav, acme, mail, docker-compose, olefy, smtp, imap
Last push: 2026-08-20T17:55:12+00:00

## Health v2 (maintenance only)
Score: 98/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 98, release rhythm 98, longevity 100
- inputs: {"age_days": 3554, "days_push": 13, "days_rel": 15, "gap_med": 17, "n_releases_24m": 30}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 13330, forks 1784 (observed 2026-08-28T04:11:03.144776+00:00)

## What it is
mailcow: dockerized is a full-featured, self-hosted mail server suite delivered as a set of Docker containers, bundling Postfix, Dovecot, SOGo, Rspamd, ClamAV, ACME, and an admin web UI. It provides email hosting with groupware features, spam filtering, and TLS certificate management out of the box.

## Use cases
- self-host a complete email server with docker
- run a mailserver with webmail and groupware
- host email for multiple domains with an admin UI
- set up SMTP and IMAP with spam filtering
- deploy a mail server with automatic TLS certificates
- replace hosted email with an on-premise mail stack

## When to choose
- you want a batteries-included mail server (MTA, IMAP, webmail, antispam, antivirus) managed via docker-compose
- you need groupware features like calendars and contacts via SOGo alongside email
- you want automatic Let's Encrypt certificates and a polished admin web UI
- you prefer a well-maintained suite with frequent security updates

## When to avoid
- you only need a lightweight SMTP relay or single-purpose MTA rather than a full suite
- you cannot run Docker or dedicate a server with proper ports and reverse DNS for email
- you want to assemble your own mail stack from individual components
- you need a mail server for very resource-constrained hardware

## Facets
- artifact type: application
- maturity: stable
- function: email, security, self-hosted, web-framework, container-orchestration
- domain: email, self-hosted, security
- platform: self-hosted
- tags: mailserver, smtp, imap, groupware, sogo, rspamd, postfix, dovecot, spam-filtering, docker-compose, acme, webmail, devops, docker, linux, web-server

## Member repositories
- mailcow/mailcow-dockerized (main) score 98

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:03.144776+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:13:21.563270+00:00, confidence not recorded.
  - readme: https://github.com/mailcow/mailcow-dockerized (fetched 2026-08-28T04:11:03.144776+00:00, sha df642270f6c2)
  - homepage: https://mailcow.email (fetched 2026-08-29T08:08:41.439617+00:00, sha 619327619db3)
  - site_page: https://mailcow.email/tags/changelog (fetched 2026-08-29T08:08:41.442351+00:00, sha 7b3268c19153)
- Data as of 2026-08-30T08:39:29.467469+00:00.