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%