WhatsApp Business API charges you based on the kind of conversations you have and how much you use it, so you only pay for what you actually need. Prices change depending on where you are and what type of message you’re sending—think marketing, utility, authentication, or customer service. Instead of charging for every single message, they bill you per conversation window. If you go t... https://www.xpectoitsolutions.com/whatsapp-business-api