Completely new set of tools to help you build better emails
Build, test, and send transactional emails at scale. Resend provides the best developer experience helping you reach users instead of spam folders.
Resend provides dedicated test email addresses (delivered@resend.dev, bounced@resend.dev, complained@resend.dev) that simulate different delivery scenarios safely. Test mode allows developers to experiment with the API without accidentally sending real emails.
Resend handles DKIM, SPF, and DMARC authentication automatically. Features like proactive blocklist tracking, multi-region sending, BIMI support, and managed dedicated IPs help maintain sender reputation and improve inbox placement rates.
Resend webhooks deliver real-time notifications for email events (delivered, opened, clicked, bounced, complained). Developers can use these events to automatically remove bounced addresses, trigger workflows, or log events to external systems.
Resend Broadcasts feature provides a WYSIWYG editor for non-developers to create campaigns, while Audiences allow contact management and segmentation. Built-in analytics track open rates, click rates, and engagement per recipient, helping optimize email performance.
React Email lets developers write email templates using React components instead of raw HTML, eliminating complex table-based layouts. Resend's API and SDKs (Node.js, Next.js, Python, Ruby, Go, etc.) make it easy to integrate email sending directly into applications with clean, maintainable code.