WhatsApp Templates API

WhatsApp Templates API WhatsApp message templates are pre-written messages that have been approved for sending outside the normal 24-hour conversation window — for example a welcome message, an appointment reminder, or a re-engagement nudge. This API lets you list, create, edit, submit, check, delete, and send templates programmatically. All paths below are relative to the API base URL: https://api.relaytiv.com/v1 Every request must be authenticated. See Authentication for the four accepted methods. The examples on this page use the X-API-Key header (and one query-parameter form for cURL). 📝 Note: Templates ride on the WhatsApp Business API channel, so this part of the API requires both API access and a plan that includes WhatsApp channels. Without them, requests are rejected with a 403 . Approval states Because messages sent outside an open conversation must be reviewed by WhatsApp first, every template carries an approval status : Status Meaning draft Created or saved but not yet sent for review. You can still edit it. received Submitted and accepted into the review queue. pending Under review. approved Cleared for sending. rejected Turned down. The rejection_reason field explains why; fix it, then submit again. Only draft and rejected templates can be edited or (re)submitted. Once a template is approved it is locked — create a new one if you need changes. Auto-approval: Some channels do not require an external review step. Templates created or submitted for a campaign on