The email API developers actually love
Ship transactional emails in minutes, not days. Domain authentication, API key management, delivery tracking, and React Email support — all from a single REST endpoint.
1import { Resend } from 'resend';23const resend = new Resend('ma_live_xxxxxxxx');45const { data } = await resend.emails.send({6 from: 'onboarding@yourdomain.com',7 to: 'user@example.com',8 subject: 'Welcome to Acme',9 html: '<h1>Welcome aboard!</h1>'10});1112console.log(data.id);
Everything you need to ship email
From domain authentication to delivery analytics, Mailarc handles the infrastructure so you can focus on your product.
Domain authentication
Add your domain, get DNS records, verify with one click. SPF, DKIM, and DMARC configured automatically for maximum deliverability.
API key management
Generate, rotate, and revoke API keys instantly. Keys are SHA-256 hashed at rest — only shown once, never stored in plain text.
React Email support
Build beautiful transactional emails with React components. Render server-side and send through the same API endpoint.
Webhook events
Get notified on delivery, bounce, open, and click events. Signed payloads, automatic retries, and full event logs.
Delivery analytics
Real-time dashboards showing send volume, delivery rates, bounces, and opens. Per-domain and per-key breakdowns.
99.9% uptime SLA
Multi-region infrastructure with automatic failover. Your emails send even when others go down.
Three steps. First email in under five minutes.
No config files. No SMTP credentials. Just your domain, an API key, and a single HTTP call.
Add your domain
Enter your sending domain and add the DNS records we generate. Verification takes under 60 seconds.
Get your API key
Generate a key from the dashboard. Use it in any language — Node, Python, Go, cURL — with a single HTTP call.
Send your first email
One POST request. From, to, subject, body. Track delivery status in real time from the dashboard.
Trusted by developers who ship
“We migrated 12,000 daily transactional emails from SendGrid to Mailarc in a single afternoon. Delivery rate went from 94.2% to 99.1% in the first week.”
“The API key management alone saved us 6 hours a month of DevOps overhead. Hashing, rotation, per-key analytics — it just works out of the box.”
“We shipped our onboarding email flow in 45 minutes. The React Email integration and real-time delivery tracking made it effortless.”
Simple, honest pricing
No free tier. No surprise charges. Pick the plan that fits, upgrade anytime.
Developer
For solo developers and early-stage projects.
- 5,000 emails / month
- 2 verified domains
- 5 API keys
- 7-day delivery logs
- Email support
Business
For teams that need volume and visibility.
- 50,000 emails / month
- Unlimited domains
- Unlimited API keys
- 90-day delivery logs
- Webhook events
- Priority support
- Custom DKIM signing