# capjs vs docker-mailserver

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

| | capjs | docker-mailserver |
|---|---|---|
| Score | 72/100 | 80/100 ✓ |
| Rank in category | #15 of 78 in Security | #1 of 16 in Mail Server |
| GitHub stars | 8 201 | 19 704 ✓ |
| Stars, last 30 days | +349 | +830 ✓ |
| Stable releases, 12 months | 16 ✓ | 2 |
| Latest release | standalone@3.1.13 · 23 Sept 2026 ✓ | v16.0.1 · 4 Sept 2026 |
| Setup | Easy ✓ | Advanced |
| Official Docker image | Yes | Yes |
| License | Other | MIT |
| Main language | JavaScript | Shell |

## Which one should you pick?

docker-mailserver scores 80/100 against 72/100 for capjs, so it is the safer default.

capjs ships more often: 16 stable releases in the past year, against 2 for docker-mailserver.

If you want the quickest setup, capjs is easier to run; docker-mailserver needs more configuration.

docker-mailserver is growing faster right now (+830 stars in 30 days).

## Details

- [capjs](https://selfhost.directory/project/capjs) (markdown: https://selfhost.directory/project/capjs.md)
- [docker-mailserver](https://selfhost.directory/project/docker-mailserver) (markdown: https://selfhost.directory/project/docker-mailserver.md)

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Source: https://selfhost.directory/compare/capjs-vs-docker-mailserver