What is WhatsApp opt-in?

How it works Meta's WhatsApp Business Messaging Policy says you may contact people only if they gave you their number and you received **opt-in permission** confirming they want to get messages from you. Meta's platform guide adds that the opt-in must **clarify your business name and intent**.

Common ways to collect opt-in - A checkbox on your website form: "Send me order updates on WhatsApp from [Your Business]." - At checkout or in your app. - On a sign-up form at your shop counter. - In a Click-to-WhatsApp ad or a WhatsApp Flow where the customer chooses to get updates.

Meta's policy recommends getting separate opt-in for each type of message — for example, order updates and offers — so people get only what they expect.

Opt-out People must be able to stop messages, and you must respect every request to block, stop or opt out — on or off WhatsApp. A "Stop offers" quick-reply button on marketing templates makes this easy.

Why it matters for a business Messages people asked for get read; messages they didn't get blocked and reported, which lowers your quality rating and can reduce your messaging limit. Meta's policy also says not to "spam, or surprise people".

An example An online store adds a ticked-by-the-customer box at checkout: "Get delivery updates on WhatsApp". It sends those customers shipping updates. For festive offers, it asks separately, so only customers who chose offers receive them.