WhatsApp charges for using the Business API based on the number of conversations you have with your customers and who initiated the conversation. Note that WhatsApp does not charge for messages. WhatsApp has no limit to the number of messages you can send in a 24-hour session, called a "conversation."
As mentioned above, WhatsApp's charges depend on who initiated the conversation. There are two types of conversations that are billed differently:
All conversations are measured in fixed 24-hour sessions. A conversation begins when the first business message in a conversation is delivered, either initiated by the business or in response to a user message. Businesses and users can exchange any number of messages, including template messages, within a 24 hour chat session at no additional cost. Each 24 hour conversation session results in a single charge.
Charges for conversations are based on the user’s country code. A user here is defined as the customer that your business is communicating with. Rates for business-initiated and user-initiated conversations vary by country or region.
The first 1,000 conversations each month are free. This way your business can build experiences your customers will love before having to pay. Each WhatsApp Business account (WABA) will receive 1,000 free conversations per month. These conversations can be either user or business-initiated. Even if a WABA has multiple numbers attached, the free tier threshold is still 1000, as the free tier is provided at the WABA level. The free tier is refreshed monthly, based on the timezone associated with the WABA.
Conversations are not charged when users message businesses using call-to-actions buttons on Ads that Click to WhatsApp or a Facebook Page call-to-action buttons. Free entry point conversations can only be user-initiated. The first conversation that starts from the entry point is free of charge, then subsequent conversations with the user are charged.
Standard pricing applies for Ads that Click to WhatsApp. The conversation that initiates from the ad is free, but not the ad itself.
You can download the individual rate cards and find the country to region mapping for countries where regional rates apply.
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