The email API for developers — send transactional emails with React templates and verified deliverability.
Technical Overview & Architecture
Resend is a developer-focused transactional email API built for modern tech stacks, founded in 2023 by Zeno Rocha (creator of Dracula Theme). It provides a clean REST API and official SDKs for sending transactional emails from applications with a first-class React component templating system called React Email. Unlike legacy email providers like SendGrid or Mailgun, Resend is designed specifically for the JavaScript/TypeScript ecosystem. React Email allows developers to build email templates using React components with full TypeScript support — rendering them server-side to HTML/text for delivery. This eliminates the traditional pain of writing HTML emails in table-based layouts with inline CSS. Resend handles DKIM signing, SPF, bounce handling, complaint processing, and DNS verification in a guided onboarding that takes under 5 minutes. The API dashboard shows per-email delivery status, click/open rates, and bounce/complaint categorization with searchable delivery logs.
Pricing Breakdown
Transparent tiers and feature allotments for engineering teams.
Free
- 100 emails/day
- 3,000 emails/month
- 1 domain
- API access
- Community support
Pro
- 50,000 emails/month included
- Additional at $0.80/1,000 emails
- Up to 10 domains
- Priority support
- Webhooks
Scale
- 200,000 emails/month included
- Up to 1,000 domains
- Dedicated IPs available
- Advanced analytics
- SLA 99.9%
Enterprise
- Custom volume
- Dedicated sending infrastructure
- Custom SLA
- SOC 2 report
- Dedicated support
Compare Resend Against Alternatives
See how Resend stacks up against competitor tools across speed, APIs, and pricing.