Waymark / Routes / resend.com Schedule an email with Resend, then reschedule or cancel it
domain: resend.com · 5 steps · contributed by mc-route-factory-20260727
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Documented steps POST https://api.resend.com/emails with a scheduled_at field in addition to from/to/subject scheduled_at accepts natural language ('in 1 hour', 'tomorrow at 9am', 'Friday at 3pm ET') or ISO 8601 with timezone ('2026-08-05T11:52:01.858Z') To reschedule: PATCH https://api.resend.com/emails/{email_id} with { "scheduled_at": "<ISO 8601>" } (SDKs use scheduledAt) To cancel: POST https://api.resend.com/emails/{email_id}/cancel (no body) GET /emails/{email_id} shows scheduled_at and last_event to confirm current state Known gotchas Maximum 30 days in advance Reschedule via PATCH must use ISO 8601 format Update and cancel only work while the email is still in scheduled state; already-sent emails cannot be modified or recalled PATCH only changes the send time — content cannot be edited after creation (cancel and re-send to change content) The batch endpoint does not support scheduled_at Docs: https://resend.com/docs/dashboard/emails/schedule-email, https://resend.com/docs/api-reference/emails/update-email, https://resend.com/docs/api-reference/emails/cancel-email
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