技能內容

Build and send HTML emails using React components - a modern, component-based approach to email development that works across all major email clients.

Installation

npm i react-email

Or scaffold a new project:

npx create-email@latest
cd react-email-starter
npm install
npm run dev

This works with any package manager (npm, yarn, pnpm, bun) — substitute accordingly.

The dev server runs at localhost:3000 with a preview interface for templates in the emails folder.

Adding to an Existing Project

Install the packages and add a script to your package.json:

{
  "scripts": {
    "email": "email dev --dir emails --port 3000"
  }
}

import {
  Html,
  Head,
  Preview,
  Body,
  Container,
  Heading,
  Text,
  Button,
  Tailwind,
  pixelBasedPreset
} from 'react-email';

interface WelcomeEmailProps {
  name: string;
  verificationUrl: string;
}

export default function WelcomeEmail({ name, verificationUrl }: WelcomeEmailProps) {
  return (
    <Html lang="en">
      <Tailwind
        config={{
          presets: [pixelBasedPreset],
          theme: {
            extend: {
              colors: {
                brand: '#007bff',
              },
            },
          },
        }}
      >
        <Head />
        <Body className="bg-gray-100 font-sans">
          <Preview>Welcome - Verify your email</Preview>
          <Container className="max-w-xl mx-auto p-5">
            <Heading className="text-2xl text-gray-800">
              Welcome!
            </Heading>
            <Text className="text-base text-gray-800">
              Hi {name}, thanks for signing up!
            </Text>
            <Button
              href={verificationUrl}
              className="bg-brand text-white px-5 py-3 rounded block text-center no-underline box-border"
            >
              Verify Email
            </Button>
          </Container>
        </Body>
      </Tailwind>
    </Html>
  );
}

// Preview props for testing
WelcomeEmail.PreviewProps = {
  name: 'John Doe',
  verificationUrl: 'https://example.com/verify/abc123'
} satisfies WelcomeEmailProps;

export { WelcomeEmail };

const EmailTemplate = (props) => {
  return (
    <h1>Hello, {props.variableName}!</h1>
  );
}

EmailTemplate.PreviewProps = {
  variableName: "{{variableName}}",
};

export default EmailTemplate;

project/
├── emails/
│   ├── welcome.tsx
│   └── static/           <-- Images go here
│       └── logo.png

const baseURL = process.env.NODE_ENV === "production"
  ? "https://cdn.example.com"  // User's production CDN
  : "";

export default function Email() {
  return (
    <Img
      src={`${baseURL}/static/logo.png`}
      alt="Logo"
      width="150"
      height="50"
    />
  );
}

Component	Required Class	Why
`Button`	`box-border`	Prevents padding from overflowing the button width
`Hr` / any border	`border-solid` (or `border-dashed`, etc.)	Email clients don't inherit border type
Single-side borders	`border-none` + the side	Resets default borders on other sides

import { render } from 'react-email';
import { WelcomeEmail } from './emails/welcome';

const html = await render(
  <WelcomeEmail name="John" verificationUrl="https://example.com/verify" />
);

const text = await render(<WelcomeEmail name="John" verificationUrl="https://example.com/verify" />, { plainText: true });

import { Resend } from 'resend';
import { WelcomeEmail } from './emails/welcome';

const resend = new Resend(process.env.RESEND_API_KEY);

const { data, error } = await resend.emails.send({
  from: 'Acme <[email protected]>',
  to: ['[email protected]'],
  subject: 'Welcome to Acme',
  react: <WelcomeEmail name="John" verificationUrl="https://example.com/verify" />
});

Command	Description
`email dev --dir <path> --port <port>`	Start the preview development server (default: `./emails`, port 3000)
`email build --dir <path>`	Build the preview app for production deployment
`email start`	Run the built preview app
`email export --outDir <path> --pretty --plainText --dir <path>`	Export templates to static HTML files
`email resend setup`	Connect the CLI to your Resend account via API key
`email resend reset`	Remove the stored Resend API key

import { EmailEditor, type EmailEditorRef } from '@react-email/editor';
import '@react-email/editor/themes/default.css';
import { useRef } from 'react';

export function MyEditor() {
  const ref = useRef<EmailEditorRef>(null);

  return (
    <EmailEditor
      ref={ref}
      content="<p>Start typing...</p>"
      theme="basic"
    />
  );
}

React Email | Skills Pool

React Email

React Email

Installation

Adding to an Existing Project

Basic Email Template

Behavioral Guidelines

Essential Components

Before Writing Code

Static Files and Images

Directory Structure

Dev vs Production URLs

Styling

Key Rules

Required Classes

Structure Notes

Rendering

Convert to HTML

Convert to Plain Text

Sending

CLI Commands

Internationalization

Email Editor

Common Patterns

Email Best Practices

Additional Resources

Extract Errors

Frontend Patterns

Coding Standards

Coding Standards

Coding Standards

Frontend Patterns