React Email
Open-source React components for building responsive, cross-client email templates that compile to clean HTML.
About
React Email is an open-source component library from Resend for building email templates with React and TypeScript. It gives you high-quality unstyled components (Html, Head, Body, Container, Section, Row, Column, Text, Heading, Button, Link, Image, Hr, Preview, Tailwind) plus 50+ copy-paste patterns, and it handles Gmail, Outlook, and Apple Mail inconsistencies plus dark mode for you, rendering everything to standard HTML that works with any email provider. A dev CLI with a hot-reload preview server makes iterating fast, and the docs ship an llms.txt plus an installable skill so coding agents (Claude Code, Cursor, Copilot) can build emails with it.
The library is MIT-licensed and free; the business model is that open-source components funnel users toward Resend's paid email sending API (Resend, YC W23, raised an $18M Series A from a16z). With roughly 19,500 GitHub stars and over 2.2 million weekly npm downloads, it is the standard way React developers build transactional and marketing email templates in 2026. One caveat: it builds templates, not sends them, so you still need an email API or ESP to deliver.
What it can do
- Unstyled React email components
- Cross-client rendering (Gmail, Outlook, Apple Mail)
- Dark mode support
- Tailwind CSS integration
- Hot-reload preview server
- 50+ copy-paste email patterns
- Compiles to standard HTML
- MIT-licensed, free to use
- LLM-ready docs (llms.txt) and agent skill
Setup
Run npm i react-email@latest, define templates as React components, and preview with the dev CLI.
Prerequisites
Node.js and React/TypeScript project; an email sending provider (e.g. Resend) for delivery.
Use cases
Works with
Trust score — 8/10
Scored 8/10 (TIER verified, metrics-v1). Evidence: open-source codebase fully inspectable on GitHub (~19,500 stars); ~2.2M weekly npm downloads and the Resend business model documented in independent project research. Strengths: MIT license, huge adoption, solves the genuinely painful cross-client email problem, agent-ready docs. Docked for: (1) it is a template library only — delivery still requires a separate paid service; (2) component quality claims are community-reported without published independent benchmarks; (3) Resend's funnel means long-term direction follows its commercial API. License: MIT; free, open source.
★ 19,500 GitHub stars
How the trust score is built
Full methodology →- Adoption · stars/downloads, log-scaled vs peers
- 8.0/10
- Maintenance · recency, releases, issue load
- 8.0/10
- Openness · license + docs
- 9.0/10
- Manual review · sanity read + red-flag check
- 8.0/10
- · By Resend (YC W23); ~19,500 GitHub stars, ~2.2M weekly npm downloads
- · Open-source components funnel users to Resend's paid sending API
- · Ships llms.txt and an installable skill for coding agents
- · Template library only — does not send emails
Sources
Every fact above was checked against these sources. Where a claim comes from the provider and couldn't be independently verified, the text says so.