How to Build Your Own Postal
Replace Postal with a custom build. An open source mail delivery platform
Build Difficulty: 5/5
Build a working replacement in a weekend with AI tools
Estimated Timeline
Based on 6 features at Weekend Project difficulty, expect about One weekend with AI-assisted development.
Recommended Tech Stack
Full-stack React framework with API routes and server components
PostgreSQL database, auth, and real-time subscriptions
Utility-first styling for rapid UI development
Transactional and marketing email delivery
Key Features to Replicate
Top features across 6 categories. See all 6 features
Deliverability(1 features)
Send mail from different IP addresses to help build and maintain good IP reputation
Development(1 features)
Automatically hold messages in Postal as needed to handle testing during development
Infrastructure(1 features)
Easily horizontally scale mail service up and down as needed
Integration(1 features)
Set up webhooks to notify HTTP endpoints when messages are delivered or have issues
Security(1 features)
Integrate with SpamAssassin, rspamd and ClamAV to have incoming and outgoing messages checked for threats and spam
User Interface(1 features)
Manage mail servers and view mail logs through an easy to use web interface
Cost Calculator
Pricing data not available for Postal. Check their website for current pricing.