Stalwartlabs by stalwartlabs

All-in-one Mail & Collaboration server. Secure, scalable and fluent in every protocol (IMAP, JMAP, SMTP, CalDAV, CardDAV, WebDAV).

imapjmapmailrustserversmtppop3caldavcarddavwebdav
Verdict 78/100 health $4.13/mo cheapest, hetzner 3/5 setup difficulty 565k docker pulls Last release 7 days ago

Self-host Stalwartlabs on hetzner CAX11 for $4.13/mo.

Health score
78 /100
6-dim composite
Self-hosts from
$4.13 /mo
hetzner · CAX11
Difficulty
3 /5
External DB / setup
GitHub stars
13k
729 forks

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.

activity
92
maturity
94
community
77
security
85
sustainability
100
adoption
36

Adoption signals

Real-world usage data, pulled from each registry. The bigger the numbers, the more battle-tested the project.

SignalValueSource
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 age3.2 yearssince Mar 2023
Last commit3 days agoMay 4, 2026
Releases shipped73last: 7 days ago
Security policySECURITY.mddeclared by maintainers
Funding links2declared by maintainers

Self-hosting cost across providers

Detected requirements: 4GB RAM, 40GB disk minimum. Cheapest plan per provider that meets the requirement.

ProviderPlanSpecsMonthly
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

3 known advisories tracked via OSV.dev. Most recent: 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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Frequently asked questions

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