Freedom251 › Mail Server Software
Mailu
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Mailu | Free software; self-hosted mail server; no hosted plan or price stated | Free |
As mailu.io lists them, read 3 Oct 2026. The maker's own page has the final word.
Facts from Mailu's own pages
- Administration
- Admin features include global administrators, announcements, per-domain delegation, and quotas. · mailu.io, 3 Oct 2026
- Deployment
- Mailu runs as Docker containers and documents Docker Compose and Kubernetes deployment options. · mailu.io, 3 Oct 2026
- Founded
- 2014 · mailu.io, 28 Sept 2026
- Hardware
- The setup guide says Mailu ships multi-architecture images for linux/amd64, linux/arm64v8, and linux/armv7 hardware. · mailu.io, 3 Oct 2026
- Integrations
- The documentation describes Nextcloud authentication through IMAP and calendar and address-book access through Radicale using WebDAV/CardDAV/CalDAV clients. · mailu.io, 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. · mailu.io, 3 Oct 2026
- Mail management
- Features include aliases, domain aliases, custom routing, and full-text search of email attachments. · mailu.io, 3 Oct 2026
- Mail protocols
- It supports IMAP, IMAP+, SMTP, and Submission, with client auto-configuration profiles. · mailu.io, 3 Oct 2026
- Privacy
- The project states that it uses all free and open-source software components and includes no tracker. · mailu.io, 3 Oct 2026
- Product
- Mailu is a free software mail server distributed as a set of Docker images. · mailu.io, 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. · mailu.io, 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. · mailu.io, 3 Oct 2026
- Security
- Listed security features include enforced TLS, DANE, MTA-STS, Let's Encrypt, outgoing DKIM, antivirus scanning, and blocking malicious attachments. · mailu.io, 3 Oct 2026
- Spam controls
- Listed antispam features include auto-learning, greylisting, DMARC, SPF, and anti-spoofing. · mailu.io, 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. · mailu.io, 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. · mailu.io, 3 Oct 2026
Where Mailu stands on Freedom251
- Mail Server Software#13 of 34