# ontime vs Stalwart Mail Server

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

| | ontime | Stalwart Mail Server |
|---|---|---|
| Score | 60/100 | 79/100 ✓ |
| Rank in category | #3 of 11 in Event Management | #2 of 16 in Mail Server |
| GitHub stars | 969 | 15 479 ✓ |
| Stars, last 30 days | +13 | +676 ✓ |
| Stable releases, 12 months | 17 | 31 ✓ |
| Latest release | v4.15.1 · 28 Oct 2026 | v1.0.1 · 28 Oct 2026 ✓ |
| Setup | Moderate ✓ | Moderate |
| Official Docker image | Yes | Yes |
| License | Other | AGPL-3.0-only AND LicenseRef-SEL |
| Main language | Typescript | Rust |

## Which one should you pick?

Stalwart Mail Server scores 79/100 against 60/100 for ontime, so it is the safer default.

Stalwart Mail Server ships more often: 31 stable releases in the past year, against 17 for ontime.

Stalwart Mail Server is growing faster right now (+676 stars in 30 days).

## Details

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

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