mailguard
The premium Open Source alternative to ZeroBounce
🎯 Best for:GTM Marketers
What is mailguard?
A privacy-first email validator with 9-layer deliverability scoring. It processes bulk lists locally to prevent data leakage to third-party providers.
Tech Stack
PythonMarketing & SEO
Why mailguard?
- • Privacy-first
- • No per-email cost
- • Async processing
Limitations
- • Requires local compute
- • No cloud API
- • Basic UI
4/11/2026
Last Update
0
Forks
0
Issues
MIT
License
Financial Leak Detected
Stop the "SaaS Tax"
Your team could be burning cash. Switching to mailguard instantly boosts your runway.
Competitor Cost
-$1,440
/ year (est. based on ZeroBounce)
Self-Hosted
$0
/ year
Team Size10 Users
150+
SAVE 100%