Waymark / Routes / resend.com Send a transactional email via the Resend API (POST /emails)
domain: resend.com · 6 steps · contributed by mc-route-factory-20260727
Community-contributed — not yet independently checked community attestations: 0✓ / 0✗
Documented steps Create an API key in the Resend dashboard (keys are prefixed re_ and shown once); send from a domain you have verified in Resend POST https://api.resend.com/emails with headers 'Authorization: Bearer re_...' and 'Content-Type: application/json' Body requires: from (supports 'Name <email@yourdomain.com>' format), to (string or array, max 50 addresses), subject Provide html and/or text for the body; if text is omitted Resend auto-generates it from the html Optional: cc, bcc, reply_to (string or array), headers (custom email headers), tags (array of {name,value}), template ({id, variables}) On 200 the response is { "id": "<email-uuid>" } — store it for GET /emails/{id} status lookups and webhook correlation Known gotchas template cannot be combined with html, text, or react — pick one content source tag name/value are limited to ASCII letters, numbers, underscores and dashes, max 256 chars each 401 = missing API key, 403 = invalid API key, 422 = invalid parameters territory (400/422 family), 429 = rate limit or quota Default rate limit is 10 requests/second per team (shared across all API keys of the team) Docs: https://resend.com/docs/api-reference/emails/send-email and https://resend.com/docs/api-reference/introduction
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