Cloud//Resend

Transactional email API. External API — your app calls Resend via HTTP to send emails. No SMTP server to manage.

Transactional email API. External API — your app calls Resend via HTTP to send emails. No SMTP server to manage.

Send emails via REST API or SDK. Supports React Email templates (JSX → HTML emails).

Use cases: welcome emails, password resets, notifications, receipts — anything triggered by your app

Your Vercel Function or backend calls resend.emails.send() → Resend handles delivery, DKIM, SPF, bounce tracking

Alternative to SendGrid, Mailgun, AWS SES — but with a developer-first API and React Email integration

For bulk email (newsletters, marketing), you'd use a different tool. Resend is for transactional (event-triggered) email.