Resend Email API

Resend is a developer-first email API platform created by Zeno Rocha, a developer advocate known for creating Dracula theme and Pumpkin, and Bu Kinoshita in 2023, backed by investors including Y Combinator and Paul Graham, providing a simple, powerful API for sending transactional and marketing emails with React Email integration, comprehensive SDKs, and real-time analytics, designed to be the easiest way to send emails from web applications with a focus on developer experience, adopted by over thirty thousand developers and companies including Stripe, Cloudflare, and Vercel for their email delivery. The API-first design provides a clean REST API with SDKs for Node.js, Python, Ruby, PHP, Go, Rust, and Elixir, with the Node.js SDK being the primary client featuring methods for sending emails with from, to, subject, HTML, text, reply-to, cc, bcc, attachments, tags, and custom headers, with automatic retry on failure, idempotency keys for preventing duplicate sends, and rate limiting for reliable delivery. The React Email integration enables building emails using React components, with the React Email library providing a component-based API for constructing email templates using TypeScript and JSX, with components including Body, Button, Container, Head, Heading, Hr, Html, Img, Link, Preview, Row, Section, Text, and Column, producing responsive HTML emails that render correctly across all email clients including Gmail, Outlook, and Apple Mail. The dashboard provides real-time analytics with delivery, open, click, and bounce metrics. The contact management for subscriber lists. The webhook events for delivery tracking. The domain authentication through DNS records. Designed by Zeno Rocha. Designed for developers.