What is Template messaging? How will I be charged for it?

Template messaging is basically HSM (Highly Structured Messages or Template Messages) as WhatsApp calls them. Template messaging is used for sending out transactional notifications to opted-in customers. If a customer has opted-in to a business' registered WhatsApp number by any of the 5 mechanisms provided by Gupshup, they are considered opted-in users. WhatsApp allows businesses to do template messaging with such users. Template messaging must only follow text message formats pre-approved by WhatsApp (media messages not allowed). Businesses are charged a per template message cost for all outgoing template messages basis their country