Mailu
The facts below are what the maker publishes about Mailu, checked and dated. Our editors have not written about it yet.
Plans and prices
From Mailu's own pricing page, checked 3 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Mailu | Free | Free software; self-hosted mail server; no hosted plan or price stated |
The facts
Each one read from Mailu's own pages, with the date it was checked.
What it does
- Administration
- Admin features include global administrators, announcements, per-domain delegation, and quotas.checked 3 Oct 2026
- Deployment
- Mailu runs as Docker containers and documents Docker Compose and Kubernetes deployment options.checked 3 Oct 2026
- Hardware
- The setup guide says Mailu ships multi-architecture images for linux/amd64, linux/arm64v8, and linux/armv7 hardware.checked 3 Oct 2026
- Integrations
- The documentation describes Nextcloud authentication through IMAP and calendar and address-book access through Radicale using WebDAV/CardDAV/CalDAV clients.checked 3 Oct 2026
- Limitations
- The setup guide cautions that Mailu is not massively tested and recommends testing every feature before using it for a critical mail server; it also says long-term professional support seekers should consider Poste.io.checked 3 Oct 2026
- Mail management
- Features include aliases, domain aliases, custom routing, and full-text search of email attachments.checked 3 Oct 2026
- Mail protocols
- It supports IMAP, IMAP+, SMTP, and Submission, with client auto-configuration profiles.checked 3 Oct 2026
- Privacy
- The project states that it uses all free and open-source software components and includes no tracker.checked 3 Oct 2026
- Product
- Mailu is a free software mail server distributed as a set of Docker images.checked 3 Oct 2026
- Purpose
- The project aims to provide an easily set up and maintained full-featured mail server without proprietary software or unrelated groupware features.checked 3 Oct 2026
- Requirements
- The documentation lists minimum memory and swap of 1 GB each without ClamAV, or 3 GB memory and 1 GB swap with ClamAV.checked 3 Oct 2026
- Security
- Listed security features include enforced TLS, DANE, MTA-STS, Let's Encrypt, outgoing DKIM, antivirus scanning, and blocking malicious attachments.checked 3 Oct 2026
- Spam controls
- Listed antispam features include auto-learning, greylisting, DMARC, SPF, and anti-spoofing.checked 3 Oct 2026
- Support
- The project directs simple questions to its Matrix room, complex questions to GitHub discussions, and bug reports to GitHub issues; it describes itself as mostly developed in contributors' free time.checked 3 Oct 2026
- Web and user features
- It provides webmail and administration interfaces, plus user features such as auto-reply, auto-forward, fetched accounts, and managesieve.checked 3 Oct 2026
The company
- Founded
- 2014checked 28 Sep 2026
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