gomailserver

The premium Open Source alternative to Microsoft Exchange

🎯 Best for:Users wanting a modern, high-performance alternative to legacy mail servers

What is gomailserver?

A modular mail server supporting SMTP, IMAP, and Dav protocols for contacts and calendars. It includes built-in security features like DKIM signing and integrated anti-spam engines.

Tech Stack
GoEmail Clients & Services

Why gomailserver?

  • All-in-one groupware
  • Memory safe (Go)
  • Easy to compose modules

Limitations

  • Newer project/less mature
  • Complex DNS configuration
  • No native mobile app
1/26/2026
Last Update
3
Forks
1
Issues
AGPL-3.0
License
Financial Leak Detected

Stop the "SaaS Tax"

Your team could be burning cash. Switching to gomailserver instantly boosts your runway.

Competitor Cost
-$1,440
/ year (est. based on Microsoft Exchange)
Self-Hosted
$0
/ year
Team Size10 Users
150+
SAVE 100%

Community Discussion

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