Email for developers
The best way to reach humans instead of spam folders. Deliver transactional and marketing emails at scale with high deliverability, powerful SDKs, and developer-first APIs.
import { Resend } from 'resend';
const resend = new Resend('re_123456789');
await resend.emails.send({
from: 'Acme <onboarding@resend.dev>',
to: ['alex@example.com'],
subject: 'Welcome to Acme!',
html: '<strong>Welcome to the modern email platform!</strong>',
tags: [
{ name: 'category', value: 'onboarding' },
],
});Welcome to the future of email.
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Engineered for High Deliverability
Everything you need to deliver emails at global scale
A unified email platform with clean APIs, deep deliverability telemetry, and full lifecycle automation.
Smart IP Warmup & Deliverability Protection
Automatic SPF, DKIM, DMARC, and MX verification ensures your domain reputation remains pristine. Our intelligent warm-up engine safely ramps daily volume across dedicated IPs while automated suppression lists block known hard bounces and complaints.
Inbound Webhooks
Parse raw RFC-822 MIME mail, extract attachments, download original .eml archives, and stream webhooks directly into your application.
Audiences & Segments
Store contact subscribers, customize topics preferences, and build dynamic segments by traits or lifecycle stages.
Broadcast Campaigns
Dispatch product updates, announcements, or newsletters. Target specific cohorts with instantaneous or scheduled delivery.
Remote AI MCP Server
Built-in Model Context Protocol server. AI agents (Claude Desktop, Cursor, Antigravity) can draft, dispatch, track, and inspect emails autonomously.
Interactive Test Console
Test the delivery engine right now
Simulate an API dispatch and inspect the real-time latency and HTTP response headers.
Built for modern engineering teams
Loved by developers worldwide
“Resend makes email feel like any modern developer API. We set up transactional receipts in 10 minutes and our deliverability jumped to 99.9%.”
“The React Email support combined with the Go engine speed is completely unmatched. We discarded our legacy SendGrid stack completely.”
“The built-in MCP server lets our AI agents directly inspect bounced emails and trigger campaigns through natural language prompts. Mindblowing.”
Ready to send emails that actually reach the inbox?
Start sending transactional emails and marketing broadcasts in under two minutes.