# Stalwart Mail Server vs windmill

> Two self-hosted projects, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.

| | Stalwart Mail Server | windmill |
|---|---|---|
| Score | 78/100 ✓ | 77/100 |
| Rank in category | #2 of 16 in Mail Server | #6 of 32 in Workflow Automation |
| GitHub stars | 15 464 | 18 308 ✓ |
| Stars, last 30 days | +680 ✓ | +288 |
| Stable releases, 12 months | 31 | 163 ✓ |
| Latest release | v1.0.1 · 28 Oct 2026 | v1.853.0 · 28 Oct 2026 |
| Setup | Moderate ✓ | Moderate |
| Official Docker image | Yes | Yes |
| License | AGPL-3.0-only AND LicenseRef-SEL | Other |
| Main language | Rust | Rust |

## Which one should you pick?

Stalwart Mail Server scores 78/100 against 77/100 for windmill, so it is the safer default.

windmill ships more often: 163 stable releases in the past year, against 31 for Stalwart Mail Server.

Stalwart Mail Server is growing faster right now (+680 stars in 30 days).

## Details

- [Stalwart Mail Server](https://selfhost.directory/project/stalwart-mail-server) (markdown: https://selfhost.directory/project/stalwart-mail-server.md)
- [windmill](https://selfhost.directory/project/windmill) (markdown: https://selfhost.directory/project/windmill.md)

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Source: https://selfhost.directory/compare/stalwart-mail-server-vs-windmill