# Flipt vs Stalwart Mail Server

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

| | Flipt | Stalwart Mail Server |
|---|---|---|
| Score | 66/100 | 79/100 ✓ |
| Rank in category | #4 of 8 in Feature Flags | #2 of 16 in Mail Server |
| GitHub stars | 4 932 | 15 485 ✓ |
| Stars, last 30 days | +21 | +682 ✓ |
| Stable releases, 12 months | 16 | 31 ✓ |
| Latest release | v1.62.0 · 23 Oct 2026 | v1.0.1 · 28 Oct 2026 ✓ |
| Setup | Easy ✓ | Moderate |
| Official Docker image | Yes | Yes |
| License | Other | AGPL-3.0-only AND LicenseRef-SEL |
| Main language | Go | Rust |

## Which one should you pick?

Stalwart Mail Server scores 79/100 against 66/100 for Flipt, so it is the safer default.

Stalwart Mail Server ships more often: 31 stable releases in the past year, against 16 for Flipt.

If you want the quickest setup, Flipt is easier to run; Stalwart Mail Server needs more configuration.

Stalwart Mail Server is growing faster right now (+682 stars in 30 days).

## Details

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

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