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WhatsApp Business API: how Meta bills messages and what drives the cost

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The WhatsApp Business API links a business's number to its own software so messages can be sent automatically and handled by a team. Meta charges for each delivered message the business starts, with rates depending on the message category and the recipient's country. Replies to conversations customers initiate cost considerably less, and messages customers send to the business are never billed. Since 1 October 2026, the first 1,000 service replies per number each month are free. Separately, the one-time cost of building and maintaining the integration is paid to whoever sets it up, and some providers add a monthly platform fee.

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