Resend
A developer email API with authenticated sending domains, SDKs, and receiving events. Keep sending acceptance and received-message retrieval distinct.
Start with the first guide, then choose a sending, receiving, or feedback task. Each walkthrough identifies permissions, operational checks, and the boundary between the service and MailKite. Refer to the official Resend documentation for current platform requirements.
Explore the guides
Prepare a Resend domain and sending key
Verify a Resend sending domain, choose an appropriately scoped API key, and separate outbound DNS from inbound routing.
Send application email with the Resend SDK
Send a controlled Resend message, check its data/error result, and retain the message identity for delivery reconciliation.
Receive incoming email through Resend
Connect Resend receiving events to a verified handler and retrieve the incoming message without confusing notifications with full content.