React Email

React component library and toolset for building transactional and marketing emails with TypeScript. Delivers high-quality, unstyled components that replace table-based layouts and archaic HTML with a component-driven workflow. Compiles to standards-compliant HTML that renders consistently across Gmail, Outlook, Apple Mail, and Yahoo Mail.

Developed by the Resend team. Differentiates from traditional email tooling by letting developers compose emails in JSX or TSX with the same patterns as web apps. Outputs plain HTML that works with any delivery provider.

Key capabilities:

• Prebuilt components such as Button, Container, Section, Column, Heading, Image, and Link with cross-client compatibility
• Dark mode support with automatic style switching for supported clients
• Live preview server for iterating on templates during development
• Provider-agnostic output that integrates with Resend, Nodemailer, SendGrid, Postmark, AWS SES, and others
• Markdown and code-block components for documentation-style emails

Engineers use React Email to author transactional notifications, onboarding sequences, and marketing campaigns using familiar React syntax. Templates compile to HTML and slot into existing email delivery pipelines without vendor lock-in. The dev server and preview component speed up template iteration compared to manual HTML and inline CSS.