Mailu/Mailu

Health v2 · maintenance only

Flags: no_license

Adoption not part of the score

7474 stars · 997 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Mailu is a full-featured, self-hosted email server distributed as a set of Docker images, providing SMTP, IMAP, webmail, and an admin interface. It bundles security and antispam features such as TLS, DKIM, DMARC, SPF, greylisting, and antivirus scanning into an easily deployable docker-compose setup.

Use cases

• self-host a complete email server with docker
• run my own SMTP and IMAP mail server
• host webmail with admin interface for my domain
• set up DKIM, DMARC and SPF for outgoing mail
• deploy a mail server with letsencrypt TLS
• replace google workspace with a self-hosted mail solution
• manage email users, aliases and quotas via a web UI

When to choose

• you want a full mail server (SMTP, IMAP, webmail, admin) deployable via docker-compose
• you need built-in antispam, antivirus, DKIM/DMARC/SPF and TLS out of the box
• you prefer an all-FOSS stack without proprietary groupware extras
• you want client auto-configuration, sieve, auto-reply and fetchmail support

When to avoid

• you only need a lightweight SMTP relay or transactional email sender rather than a full mailbox server
• you cannot run Docker or dedicate a server with proper DNS, reverse DNS and open mail ports
• you want a managed email service with no operational responsibility
• memory is very limited and you require the bundled antivirus component

Facets

application · maturity active

email self-hosted security web-framework email self-hosted developer-tools security self-hosted python mail-server smtp imap webmail dkim dmarc antispam docker-compose letsencrypt fetchmail docker linux

Member repositories

For agents

markdown · JSON · MCP: product_card(name="Mailu/Mailu")