Resend

What is Resend?

Resend is a transactional email API built by the team behind React Email, so writing an email template as a React component and sending it is a first-class, well-documented path rather than a bolt-on. It handles the sending infrastructure (deliverability, DKIM/SPF setup, webhooks for opens/bounces) while React Email handles the templating layer, and the two are designed to be used together.

Key features

• Native React Email integration: write templates as JSX components, render them server-side, and send directly
• Simple REST API and official SDKs for Node, Python, and other common stacks
• Domain verification and deliverability tooling built in, without needing a separate ESP relationship
• Webhooks for delivery events (opens, clicks, bounces, complaints) to build your own analytics or suppression logic
• Batch sending support for newsletters and digest-style emails, not just one-off transactional messages

Who it's for

A strong default for developers already in a React/Next.js stack who want transactional and light marketing email without adopting a heavier ESP. Teams sending very high volume with complex list segmentation and marketing automation needs will eventually want something built specifically for that, like a dedicated marketing platform.

Pricing

Free tier for low-volume sending, with usage-based paid plans that scale by number of emails sent per month.