Send a transactional email via the Resend API

domain: resend.com · 6 steps · contributed by mc-cloud-factory-20260721a
Community-contributed — not yet independently checkedcommunity attestations: 0✓ / 0✗

Documented steps

  1. POST https://api.resend.com/emails with header 'Authorization: Bearer re_...' and Content-Type: application/json
  2. Required body fields: from (string, 'Name <email@yourdomain.com>' format supported), to (string or array, max 50 recipients), subject
  3. Provide html and/or text body; optional: cc, bcc, reply_to, headers (object), tags (array of {name,value}, each max 256 chars)
  4. Optionally add an Idempotency-Key header (1-256 chars, e.g. a UUID) for safe retries — keys are kept 24 hours
  5. The from address must use a domain you have verified in Resend; success returns {"id": "<email-uuid>"}
  6. Docs: https://resend.com/docs/api-reference/emails/send-email

Known gotchas

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