Running in production · Independent · 22 Oct 2026

mailcow/mailcow-dockerized

mailcow: dockerized - ๐Ÿฎ + ๐Ÿ‹ = ๐Ÿ’•

← Running in production
Mailcow: Dockerized email suite. Runs a complete private email server with spam filters and webmail.

In simple English

This tool sets up a complete email server on your own server. It handles sending mail, receiving mail, spam filtering and webmail access. You get a web panel to manage users and domains. It saves you from paying monthly fees to large cloud providers. Running your own email requires ongoing maintenance and technical knowledge.

What it is

Mailcow is a collection of email services bundled into Docker (a way to run a program inside its own sealed box, so it cannot break anything else on your server) containers. It combines a mail transfer agent, an anti-spam scanner, a calendar server and a webmail interface into one managed package.

What it is good for

Solo builders who want total control over their data and need an independent email system for their domain.

Stars14k
LicenceGPL-3.0
Latest2026-10 (2026-10-21)checked 22 Oct 2026
Last code change2026-10-22
Written inJavaScript
Setup effort
4 / 5
Payoff
4 / 5
Good
  • Combines mail, spam filters and webmail in one package.
  • Includes a web dashboard for adding domains and mailboxes.
  • Docker setup keeps all related email services neatly organized.
Watch for
  • Needs a dedicated server with at least 6 GB of RAM to run reliably.
  • Managing your own mail server requires fighting spam blacklists and fixing delivery issues.
  • GPL-3.0 licence requires you to share modifications if you distribute the software.
Replaces

Google Workspace or manual Postfix and Dovecot server setup

Works well with

Nginx Proxy Manager

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Install
git clone https://github.com/mailcow/mailcow-dockerized
cd mailcow-dockerized
./generate_config.sh
docker compose up -d

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On Stack Radar: Infrastructure & Security โ€บ Hosting & Deployment โ€บ Email Servers.

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