Migrate from Resend to AISend in 5 Minutes
Why switch from Resend?
Resend is a great email API, but it lacks AI-powered features. AISend adds intelligent provider routing, deliverability scoring, send time optimization, and AI template generation — all while maintaining API compatibility with Resend.
Step 1: Create your AISend account
Sign up at aisend.app. It's free — 1,000 emails/month, no credit card required. Create an API key from the dashboard. AISend keys use the as_ prefix.
Step 2: Update your API endpoint
Replace the Resend API base URL with AISend's. Change https://api.resend.com to https://api.aisend.app. That's it — the request format is identical.
Step 3: Swap your API key
Replace your RESEND_API_KEY (re_xxxxx) with your AISEND_API_KEY (as_xxxxx) in your environment variables. If you're using the Resend SDK, switch to the AISend SDK for full feature support.
Step 4: Verify your domains
Add your sending domains in the AISend dashboard. If you already have SPF/DKIM records for Resend, update them to point to AISend. The dashboard walks you through each DNS record.
That's it — you're done
Your existing code works unchanged. You now get AI-powered deliverability, multi-provider routing, and send time optimization — all automatically. Check your AISend dashboard to see AI insights on your email performance.
Ready to Send Smarter Emails?
1,000 emails/month free. No credit card required.