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POST
Inboxes are currently in private beta and only available to a limited number of users. The response shape might change before GA.Get early access if you’re interested in testing this feature.Once you have access, upgrade your Resend SDK to use the new methods:
The draft must have at least one recipient and a subject; a draft without a subject returns 422. Attachments saved on the draft are sent with it. A draft that was already sent returns 409. A reply draft is sent with the same In-Reply-To and References headers as Reply to Thread Email. A draft for a new conversation has neither.

Path Parameters

Body Parameters

object
Custom headers to add to the email. In-Reply-To, References, and Reply-To can’t be set and return 422.

Headers

string
Add an idempotency key to prevent duplicated emails.
  • Should be unique per API request
  • Idempotency keys expire after 24 hours
  • Have a maximum length of 256 characters
Learn more

Response Fields

string
The ID of the queued outbound email.