ZeroSMTP

The premium Open Source alternative to SendGrid

🎯 Best for:Developers needing high-volume transactional email without recurring costs.

What is ZeroSMTP?

A self-hosted alternative to SendGrid for transactional email delivery. Provides an SMTP interface for applications with no per-message costs or rate limits.

Tech Stack
JavaBackend & Auth

Why ZeroSMTP?

  • No usage limits
  • Zero cost
  • Simple SMTP integration

Limitations

  • Requires IP reputation management
  • No built-in analytics dashboard
  • Manual server maintenance
3/30/2026
Last Update
0
Forks
0
Issues
MIT
License
Financial Leak Detected

Stop the "SaaS Tax"

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

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

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