msmtpd
The premium Open Source alternative to SendGrid
🎯 Best for:Developers building bespoke email infrastructure
What is msmtpd?
A toolkit for developers to build specialized SMTP daemons using a modular architecture. It allows for custom routing, filtering, and delivery logic through a plugin-based system.
Tech Stack
GoEmail Clients & Services
Why msmtpd?
- • Highly extensible
- • Modular design
- • Low resource usage
Limitations
- • Requires coding knowledge
- • No built-in GUI
- • Complex configuration
3/1/2026
Last Update
2
Forks
1
Issues
MIT
License
Financial Leak Detected
Stop the "SaaS Tax"
Your team could be burning cash. Switching to msmtpd instantly boosts your runway.
Competitor Cost
-$1,440
/ year (est. based on SendGrid)
Self-Hosted
$0
/ year
Team Size10 Users
150+
SAVE 100%