mailcow: dockerized
Docker-based email server suite with a web admin interface
13.2k stars 1.8k forks last commit first released GPL-3.0
Actively maintained
Last commit 15 Jul 2026.
mailcow: dockerized is an integrated mail server suite packaged as a set of Docker containers. It combines core mail components (SMTP/IMAP) with a web-based administration interface to manage domains, mailboxes, and security features.
Key Features
- Containerized stack managed via Docker Compose for reproducible deployments
- SMTP delivery with Postfix and IMAP access via Dovecot
- Webmail and groupware via SOGo
- Built-in spam filtering with Rspamd and antivirus scanning with ClamAV
- ACME/Let’s Encrypt certificate automation for TLS
- Web admin UI for domains, aliases, mailboxes, and access controls (ACL)
Use Cases
- Self-managed mail hosting for individuals, families, and organizations
- All-in-one email platform for small businesses needing webmail and groupware
- Homelab mail server with integrated spam/virus protection and TLS automation
Limitations and Considerations
- Operating a mail server requires careful DNS and deliverability configuration (SPF/DKIM/DMARC, rDNS) and ongoing maintenance
- Resource usage can be higher than minimalist MTAs due to multiple bundled services
mailcow: dockerized provides a cohesive, production-oriented mail stack with a unified management experience. It is well-suited for administrators who want an integrated suite rather than assembling and maintaining separate mail components.
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