Resend
Send transactional and marketing emails through developer-friendly APIs, SDKs, SMTP, and webhooks.
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About Resend
Resend is an email platform for developers. It supports transactional and marketing email delivery at scale through SDKs for multiple programming languages, a REST API, SMTP, and integrations with frameworks including Next.js, Remix, Nuxt, Express, Hono, Redwood, Bun, and Astro. Features described include test mode, real-time webhooks, a visual email editor, contact management and importing, broadcast analytics, React-based email templates, regional sending, blocklist tracking, dedicated IPs, suppression lists, DNS monitoring, DKIM and SPF verification, DMARC guidance, BIMI support, detailed logs, domain authentication, and analytics.
What you can do
Simulate email events and experiment with the API without sending real emails.
Receive real-time notifications directly to a server for email delivery, open, bounce, and click events.
Build email templates using React components powered by the react-email open source library.
Import contact lists via CSV files and map spreadsheet fields to destination audience columns.