OpenMailer

The premium Open Source alternative to ConvertKit

🎯 Best for:Developers building custom newsletter solutions.

What is OpenMailer?

A self-hosted newsletter platform replacing ConvertKit and Beehiiv using a modern Next.js architecture. It provides a lightweight interface for managing subscribers and dispatching campaigns without the overhead of enterprise marketing suites.

Tech Stack
TypeScriptMarketing & SEO

Why OpenMailer?

  • Modern React/Next.js stack
  • No monthly subscription costs
  • Lightweight codebase

Limitations

  • Requires Vercel/Node hosting
  • Fewer pre-made templates
  • Manual SMTP configuration
2/16/2026
Last Update
14
Forks
5
Issues
MIT
License
Financial Leak Detected

Stop the "SaaS Tax"

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

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

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