Foxcpp Maddy by foxcpp
Composable all-in-one mail server.
About Foxcpp Maddy
From the project's README at github.com/foxcpp/maddy. Lightly cleaned for readability; for the full source see the upstream repo.
Maddy Mail Server ===================== > Composable all-in-one mail server.
Maddy Mail Server implements all functionality required to run a e-mail server. It can send messages via SMTP (works as MTA), accept messages via SMTP (works as MX) and store messages while providing access to them via IMAP. In addition to that it implements auxiliary protocols that are mandatory to keep email reasonably secure (DKIM, SPF, DMARC, DANE, MTA-STS).
It replaces Postfix, Dovecot, OpenDKIM, OpenSPF, OpenDMARC and more with one daemon with uniform configuration and minimal maintenance cost.
Note: IMAP storage is "beta". If you are looking for stable and feature-packed implementation you may want to use Dovecot instead. maddy still can handle message delivery business.
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 | 6.0k | github.com/foxcpp/maddy |
| GitHub forks | 315 | github.com/foxcpp/maddy |
| Docker Hub pulls | 421k | hub.docker.com / foxcpp |
Release & maintenance
Is this project actively maintained, or about to die? Check the recency of last commit and last release.
| Project age | 9.5 years | since Nov 2016 |
| Last commit | 6 days ago | May 1, 2026 |
| Releases shipped | 32 | last: 6 days ago |
| Security policy | SECURITY.md | 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-2023-27582. What people say on Hacker News
Ready to self-host Foxcpp Maddy?
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.
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