Browse
C
Courier MTA
Fast, scalable, enterprise mail/groupware server providing ESMTP, IMAP, POP3, webmail, mailing list, basic…
0UnknownGPL-3.0
Self-host
Manual setupDifficulty
Manual setup(estimated)
Deploy methods
binarysource
Required dependencies
Not yet detected
Resource footprint
Needs ~1.1 GB RAM · 4 GB recommended(estimated)
Why?
- Minimum L (2 GB): estimated from the app's language, dependencies and category: about 1.1 GB. We add 25% headroom on top.
- Recommended XL (4 GB): the minimum is an estimate, so we recommend one size up for headroom.
- It does background work, so it runs always-on.
Get started
$ git clone https://www.courier-mta.org/repo.html.gitA vetted docker-compose.yml, dependency list, and RAM footprint are extracted from the repo during enrichment.
Why it ranks
53/ 100 recommended
Deployability55
Maintenance—
Security signals100
Popularity (stars)0
Metadata confidence33
Deployability · L3 · Multi-serviceEstimated30% confidence
- Estimated from catalog difficulty (not scanned)
Maintenance · UnknownUnverified
No activity data available
Security signals
- License Clarity — Clear OSI/known license
- Actively Hosted — Repository is not archived
- Maintenance Hygiene — Maintenance unknown
- Vulnerability Scan — Image not scanned
Signals are indicators, not guarantees — Source Directory has not audited this project.
Computed by Source Directory (scores-1) · last checked 2026-10-21. Independent of any paid placement.
About
Fast, scalable, enterprise mail/groupware server providing ESMTP, IMAP, POP3, webmail, mailing list, basic web-based calendaring and scheduling services.
Description from awesome-selfhosted-data · CC-BY-SA 3.0.