Stalwartlabs by stalwartlabs
All-in-one Mail & Collaboration server. Secure, scalable and fluent in every protocol (IMAP, JMAP, SMTP, CalDAV, CardDAV, WebDAV).
About Stalwartlabs
From the project's README at github.com/stalwartlabs/stalwart. Lightly cleaned for readability; for the full source see the upstream repo.
Secure, scalable mail & collaboration server with comprehensive protocol support (IMAP, JMAP, SMTP, CalDAV, CardDAV, WebDAV)
<img src="https://img.shields.io/discord/923615863037390889?label=Join%20Discord&logo=discord&style=flat-
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/stalwartlabs/stalwart |
| GitHub forks | 729 | github.com/stalwartlabs/stalwart |
| Docker Hub pulls | 565k | hub.docker.com / stalwartlabs |
Release & maintenance
Is this project actively maintained, or about to die? Check the recency of last commit and last release.
| Project age | 3.2 years | since Mar 2023 |
| Last commit | 3 days ago | May 4, 2026 |
| Releases shipped | 73 | last: 7 days 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-2026-26312. What people say on Hacker News
Ready to self-host Stalwartlabs?
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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