Cyrus IMAP
Email (IMAP/POP3), contacts and calendar server.
Description from awesome-selfhosted (CC BY-SA 3.0)
Still maintained? Yes: 1,330 commits in the last 90 days, latest release cyrus-imapd-3.12.4 (Sep 2026).
At a glance
Cyrus IMAP quick facts
- Health score
- 81/100 GOOD
- Stars
- 652
- Last commit
- yesterday (Oct 2026)
- Latest release
- cyrus-imapd-3.12.4, Sep 2026
- Licence
- BSD-3-Clause-Attribution
Top alternatives to Cyrus IMAP
In its own words
The project's README opens: "This is the Cyrus IMAP Server, developer version 3.13. This version is under active development, and is not considered "stable"."
Why it ranks here
Health score explained
Cyrus IMAP scores 81/100, #2 of 3 in Communication - Email - Mail Delivery Agents: 1,330 commits in the last 90 days earn 35.0 of 35 points, the latest release (cyrus-imapd-3.12.4, 2 months ago) earns 25.0 of 25, 652 stars add 11.3 of 20, an active, unarchived repository keeps 10 and no advertised Docker image leaves the final 10 unclaimed. That places it in the good band (70 and above). The biggest shortfall is Docker support, worth 10.0 more points.
Recomputed nightly from the GitHub API. How the score is calculated.
- Commit activity 35.0 / 35
1330 commits in 90 days (30+ scores full marks)
- Release recency 25.0 / 25
cyrus-imapd-3.12.4 released 2 months ago
- Stars 11.3 / 20
652 stars on GitHub (logarithmic)
- Not archived 10.0 / 10
Repository is active
- Docker support biggest shortfall 0.0 / 10
No Docker support advertised
Commit activity
- 1330
- Last 90 days
- 2,920
- Last 12 months
- yesterday
- Last push
Ranked #2 of 3 tools in Communication - Email - Mail Delivery Agents by health , between Dovecot (#1) and DavMail (#3) .
Details
| Licence | BSD-3-Clause-Attribution |
| Platforms | C |
| Latest release | cyrus-imapd-3.12.4 · 2 months ago |
| Stars | 652 |
| Open issues | 229 |
| Docker | Not advertised |
| Repository | cyrusimap/cyrus-imapd ↗ |
Cyrus IMAP vs its top 2 alternatives
Active tools that share a category with Cyrus IMAP (Communication - Email - Mail Delivery Agents), scored on the same five terms.
Cyrus IMAP: common questions
Is Cyrus IMAP still maintained?
Cyrus IMAP had 1,330 commits in the last 90 days and its last push was yesterday; the latest tagged release, cyrus-imapd-3.12.4, is from 2 months ago. Repoly recomputes this nightly.