How to Build Your Own Resend
Replace Resend with a custom build. Email for developers
Build Difficulty: 5/5
Build a working replacement in a weekend with AI tools
Estimated Timeline
Based on 45 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 8 categories. See all 45 features
API & Integration(4 features)
Native integrations with Next.js, Remix, Nuxt, Express, Hono, Redwood, Bun, and Astro
SDKs for Node.js, Ruby, Python, PHP, Go, Rust, Java, Elixir, and .NET
Send emails using REST API endpoints
Send emails via SMTP protocol
Analytics & Tracking(3 features)
Receive detailed information about email bounces
Track when links in emails are clicked
Track when emails are opened by recipients
Deliverability(3 features)
Get fully managed dedicated IP that automatically warms up and autoscales
Use reputable shared IPs from trustworthy senders with distributed workloads
Be notified if domain is added to DNSBLs like Spamhaus with removal requests
Email Management(3 features)
Send emails in batches for improved efficiency
Receive and process inbound emails
Schedule emails to be sent at a later time
Security(3 features)
Granular API key permissions for security
Protection against DDoS attacks
Regular penetration testing for security assurance
Support(3 features)
Direct Slack support channel for urgent issues
Support via ticket system for inquiries and issues
Guaranteed urgent response SLA for enterprise customers
Analytics & Reporting(2 features)
Unlock powerful insights about how audience interacts with broadcast emails
Get insights about email deliverability performance
Compliance & Deliverability(2 features)
Automatically manage suppression list to prevent repeated sending to unwilling recipients
Prevent repeated sending to recipients who no longer want emails and comply with CAN-SPAM
Cost Calculator
Keep Paying Resend
Build It Yourself
Total Cost Comparison
DIY hosting estimate based on Vercel + Supabase free/pro tiers (~$20/mo). Build time estimated from 45 features at very easy complexity.