This endpoint allows you to send a sticker message via WhatsApp. Stickers must be in WebP format and can be sent using a media ID or a link to hosted media.
The recipient’s phone number in international format. Must include the country code without the leading plus sign (+) or any spaces, dashes, or other special characters. Format: country code followed by the phone number. Example: 919876543210 (India: country code 91 + number 9876543210).
The unique Phone ID associated with your WhatsApp Business account. You can find this on the Zixflow WhatsApp Settings page or by calling the Get WhatsApp Accounts endpoint.
(Optional) To receive post-back notifications about the sent message as it is delivered or failed. When a message status changes (delivered, failed, etc.), a notification will be sent to this URL. See Postback Notifications for the payload format and field descriptions.
(Optional) The data that will be sent back on the post_back_url with the notification. This can be used as an identifier for the sent message if the client wants to track or correlate messages with their own system. See Postback Notifications for how it appears in the notification.