maimail: dockerized - 🐮 + 🐋 = 💕

Current Version: 0.1.0

Multi-tenant domain-keyed architecture

• Single server, multiple domains.
• Tenant context is resolved from incoming Host/domain.
• The dashboard now has tenant context extension points for branding and runtime config hooks (window.__MMAIL_TENANT_CONFIG__ and window.__MMAIL_TENANT_RESOLVER__).
• Requests include tenant metadata headers (X-Tenant-Domain, X-Tenant-Id) for downstream isolation controls.

Rust reverse proxy (/rust-proxy)

• Domain-keyed reverse proxy implemented in stable Rust.
• Supports HTTP by default and optional HTTPS (set MMAIL_PROXY_TLS_CERT + MMAIL_PROXY_TLS_KEY).
• Tenant-aware routing:
  • resolves tenant by domain/host,
  • supports per-tenant backend and route-prefix overrides,
  • injects tenant headers for downstream services,
  • logs host/tenant/backend/status context for each proxied request.
• Config sources:
  • file: rust-proxy/config/proxy.toml (default),
  • env override: MMAIL_PROXY_CONFIG,
  • server/env overrides: MMAIL_PROXY_BIND, MMAIL_PROXY_MODE, MMAIL_PROXY_DEFAULT_BACKEND, MMAIL_PROXY_LOG_LEVEL, MMAIL_PROXY_TIMEOUT_SECS, MMAIL_PROXY_TRUST_X_FORWARDED_HOST, MMAIL_PROXY_TLS_CERT, MMAIL_PROXY_TLS_KEY.

Repository management script (/scripts/manage.sh)

# show help
./scripts/manage.sh --help

# clean artifacts
./scripts/manage.sh clean

# build (default dev) or release
./scripts/manage.sh build
./scripts/manage.sh build release

# run modes
./scripts/manage.sh run dev
./scripts/manage.sh run prod
./scripts/manage.sh run proxy-dev
./scripts/manage.sh run proxy-prod
./scripts/manage.sh run web-dev

# release build
./scripts/manage.sh release

# semantic versioning
./scripts/manage.sh version bump
./scripts/manage.sh version minor
./scripts/manage.sh version major

manage.sh prefers pnpm for Node-based tasks and falls back to npm only when pnpm is unavailable.

Want to support maimail?

Please consider a support contract with Servercow to support further development. We support you while you support us. :)

You can also get a SAL which is a one-time payment with no liabilities or returning fees.

Or just spread the word: moo.

Many thanks to our GitHub Sponsors ❤️

A big thank you to everyone supporting us on GitHub Sponsors—your contributions mean the world to us! Special thanks to the following amazing supporters:

100$/Month Sponsors

50$/Month Sponsors

Info, documentation and support

Please see the official documentation for installation and support instructions. 🐄

🐛 If you found a critical security issue, please mail us to info at servercow.de.

Cowmunity

maimail community

Telegram maimail channel

Telegram maimail Off-Topic channel

Official 𝕏 (Twitter) Account

Official Mastodon Account

Telegram desktop clients are available for multiple platforms. You can search the groups history for keywords.

Misc

Important: maimail makes use of various open-source software. Please assure you agree with their license before using maimail. Any part of maimail itself is released under GNU General Public License, Version 3.

maimail is a registered word mark of The Infrastructure Company GmbH, Parkstr. 42, 47877 Willich, Germany.

The project is managed and maintained by The Infrastructure Company GmbH.

Originated from @andryyy (André)