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%

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