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Prerequisites

To get the most out of this guide, you’ll need to:

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1. Install

Get the Resend Node.js SDK. 
bun install resend

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2. Create an email template

Start by creating your email template on email-template.tsx.
email-template.tsx
import * as React from 'react';

interface EmailTemplateProps {
  firstName: string;
}

export function EmailTemplate({ firstName }: EmailTemplateProps) {
  return (
    <div>
      <h1>Welcome, {firstName}!</h1>
    </div>
  );
}

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3. Send email using React

Create a new file index.tsx and send your first email.
index.tsx
import { Resend } from 'resend';
import { EmailTemplate } from './email-template';

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

const server = Bun.serve({
  port: 3000,
  async fetch() {
    const { data, error } = await resend.emails.send({
      from: 'Acme <onboarding@resend.dev>',
      to: ['delivered@resend.dev'],
      subject: 'Hello World',
      react: EmailTemplate({ firstName: 'Vitor' }),
    });

    if (error) {
      return new Response(JSON.stringify({ error }));
    }

    return new Response(JSON.stringify({ data }));
  },
});

console.log(`Listening on http://localhost:${server.port} ...`);
Start the local server by running bun index.tsx and navigate to http://localhost:3000.

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3. Try it yourself

Bun Example

See the full source code.