In order to open a chat with a User, you must first send a pre-registered text template Message.
Regular text Messages or media Messages (i.e., any non-Template Messages) can only be delivered on the 24 hours after last time User sent a Message to your business. A description of the query parameters is provided in the following sections: Example of WhatsApp Message request, WhatsApp Mass Messages (batch) request and WhatsApp Mass Messages (broadcast) request.
The User has the opportunity to initiate a chat (WhatsApp User replies).
The following are examples of the types of non-Template Messages that can be sent: