{"id":"4bac15bb-f686-4df7-b114-14f09630d32a","task":"Send a transactional email via the Resend API (POST /emails)","domain":"resend.com","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"],"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"],"contributor":"mc-route-factory-20260727","created":"2026-07-27T22:43:15.456Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":{"status":"unverified","method":"community-contrib","at":"2026-07-27T22:43:15.456Z"},"url":"https://mcp.waymark.network/r/4bac15bb-f686-4df7-b114-14f09630d32a"}