Overview
Mailu packages a full mail server as a coordinated set of Docker images. It supports SMTP submission, IMAP, webmail, administration, aliases, routing, search, anti-spam controls and common email authentication standards. It reduces some deployment friction but does not remove the operational burden of DNS, sender reputation, abuse handling, updates, backups and reliable message delivery.Best for
Experienced administrators who need a containerized, self-hosted mail platform and can manage DNS, deliverability and security operations.Pricing and availability
The software is available under an open-source license. Infrastructure, app-store distribution, hosted services and professional support may still create costs.Platforms and integrations
Available through: web, linux.Mailu combines Docker services for SMTP, IMAP, webmail, administration, anti-spam and security functions. It integrates with DNS records, TLS certificates and external mail clients.
Privacy and security
Operating public email is security-sensitive. Configure SPF, DKIM, DMARC, reverse DNS, TLS and rate limits; patch every component; monitor queues and abuse; and maintain tested off-server backups.Key strengths
- Full mail stack delivered as coordinated containers
- Web administration and multiple user-facing features
- Support for modern email security and authentication controls
Key limitations
- Deliverability and sender reputation remain difficult
- Misconfiguration can create an abuse or data-loss risk
- Production operation requires continuous maintenance and monitoring
