docker-mailserver vs mailcow: dockerized
| Tagline | Production-ready, config-driven mail server in a single container | Dockerized full-stack mail server, a self-hosted Gmail alternative |
| Category | Email & Newsletters | Email & Newsletters |
| Replaces | Gmail / Google Workspace | Gmail / Google Workspace |
| GitHub stars | 19k | 13k |
| Language | Shell | PHP |
| License | MIT | GPL-3.0 |
| Self-host difficulty | 4/5 Involved | 3/5 Moderate |
| Deploy options | Docker Docker Compose Manual | Docker Compose Manual |
| Managed hosting | ||
| Last updated | 8 days ago | 6 days ago |
| View repo | View repo |
Where each falls short
The honest trade-offs — what you give up with each, versus the proprietary tools they replace.
docker-mailserver
- No admin web UI — all config is via files and the CLI
- No bundled webmail or groupware (calendar/contacts)
- Deliverability, DNS, and TLS setup are entirely your responsibility
- Not a newsletter/marketing tool — mailboxes only
mailcow: dockerized
- Requires a dedicated server with proper DNS/PTR and good IP reputation
- Not a bulk-newsletter tool — focused on mailboxes, not campaigns
- Ongoing maintenance, updates, and spam tuning are on you
- Resource-hungry; needs a few GB of RAM minimum
Bottom line
Choose mailcow: dockerized if you want the lower-effort setup; choose docker-mailserver for the larger community and ecosystem. mailcow: dockerized has seen more recent development. Open each guide below for deploy steps and the full feature gap.
docker-mailserver
Production-ready, config-driven mail server in a single container
mailcow: dockerized
Dockerized full-stack mail server, a self-hosted Gmail alternative