mailcow: dockerized - + = by mailcow
mailcow: dockerized - + =
About mailcow: dockerized - + =
From the project's README at github.com/mailcow/mailcow-dockerized. Lightly cleaned for readability; for the full source see the upstream repo.
[](https://translate.mailcow.email/engage/mailcow-dockerized/) [](https://twitter.com/mailcowemail) Want to support mailcow?
Please consider a support contract with Servercow to support further development. We support you while you support us_. :)
You can also get a SAL which is a one-time payment with no liabilities or returning fees.
Or just spread the word: moo. Many thanks to our GitHub Sponsors A big thank you to everyone supporting us on GitHub Sponsors, your contributions mean the world to us! Special thanks to the following amazing supporters: 100$/Month Sponsors 50$/Month Sponsors <a href="https://g
Health score breakdown
6-dimension composite. See methodology for formula and weights.
Adoption signals
Real-world usage data, pulled from each registry. The bigger the numbers, the more battle-tested the project.
| Signal | Value | Source |
|---|---|---|
| GitHub stars | 13k | github.com/mailcow/mailcow-dockerized |
| GitHub forks | 1.7k | github.com/mailcow/mailcow-dockerized |
Release & maintenance
Is this project actively maintained, or about to die? Check the recency of last commit and last release.
| Project age | 9.4 years | since Dec 2016 |
| Last commit | 5 days ago | May 2, 2026 |
| Releases shipped | 86 | last: 1 months ago |
| Security policy | SECURITY.md | declared by maintainers |
| Funding links | 2 | declared by maintainers |
Self-hosting cost across providers
Detected requirements: 4GB RAM, 40GB disk minimum. Cheapest plan per provider that meets the requirement.
| Provider | Plan | Specs | Monthly | |
|---|---|---|---|---|
| hetzner | CAX11 | 2c · 4GB · 40GB | $4.13 USD | Deploy → |
| vultr | VC2 | 1c · 1GB · 25GB | $5 USD | Deploy → |
| linode | Nanode 1GB | 1c · 1GB · 25GB | $5.12 USD | Deploy → |
| digitalocean | Basic Regular 1GB | 1c · 1GB · 25GB | $6 USD | Deploy → |
Security advisories
CVE-2025-53909. Ready to self-host mailcow: dockerized - + =?
Spin up a hetzner CAX11 (4GB RAM, 40GB disk) for $4.13/mo and follow the project's official install docs.
Data last refreshed May 7, 2026.
Similar open-source projects
Projects in our directory that replace the same SaaS or share topics with mailcow: dockerized - + =.