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Mailu

Simple yet full-featured Docker mail server

Mail Servers ★ 7.4k stars Medium setup MIT

Mailu is a free mail server distributed as a set of Docker images, providing a complete stack with antispam, webmail, and admin interface. It aims to be simpler and lighter than other mail suites.

Official siteSource code

Key features

  • Composable Docker images
  • Built-in antispam and antivirus
  • Roundcube and SnappyMail webmail
  • Admin UI and REST API

Pros & cons

Strengths

  • Lighter than mailcow
  • Kubernetes support

Trade-offs

  • Fewer features than larger suites
  • Manual DNS configuration

Mailu replaces

Self-hosted Google Workspace alternativesSelf-hosted Microsoft 365 alternatives

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