# Stalwart Mail Server vs unifi-voucher-site

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

| | Stalwart Mail Server | unifi-voucher-site |
|---|---|---|
| Score | 78/100 ✓ | 52/100 |
| Rank in category | #2 of 16 in Mail Server | #18 of 34 in Network Management |
| GitHub stars | 15 462 ✓ | 311 |
| Stars, last 30 days | +678 | — |
| Stable releases, 12 months | 30 ✓ | 15 |
| Latest release | v1.0.0 · 26 Oct 2026 ✓ | 8.13.2 · 18 Oct 2026 |
| Setup | Moderate | Moderate ✓ |
| Official Docker image | Yes | Yes |
| License | AGPL-3.0-only AND LicenseRef-SEL | MIT |
| Main language | Rust | EJS |

## Which one should you pick?

Stalwart Mail Server scores 78/100 against 52/100 for unifi-voucher-site, so it is the safer default.

Stalwart Mail Server ships more often: 30 stable releases in the past year, against 15 for unifi-voucher-site.

Stalwart Mail Server is growing faster right now (+678 stars in 30 days).

## Details

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

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Source: https://selfhost.directory/compare/stalwart-mail-server-vs-unifi-voucher-site