Email API built for developers.
Resend is a transactional email API built for developers, offering a clean REST API and official SDKs for JavaScript, Python, Ruby, PHP, Go, and other languages. It supports React Email — a component-based system for building email templates using React and TypeScript — making email template development feel like frontend development. Resend handles deliverability infrastructure, domain authentication (SPF, DKIM, DMARC), bounce management, and delivery tracking. The free tier includes 3,000 emails per month and 100 per day. It is designed as a modern, developer-friendly alternative to legacy email APIs like SendGrid and Mailgun, particularly popular in the Next.js and TypeScript ecosystem.
Best for
Best for developers who want a modern transactional email API without the complexity of legacy providers like SendGrid.
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