WABA allows messaging campaigns, but if customers complain about your messages, it blocks the templates. In this case, the status of the template changes from "Active" to "Rejected", and the tooltip next to the status indicates that Meta has blocked the template due to complaints.
As a result, the rating of the business account drops, and with it the number of available correspondence per day decreases. If you try very hard, you can even get your account blocked, but such cases are rare.
To keep customers from sending your marketing messages to spam, add an unsubscribe button to the template. If a person doesn't want to receive a broadcast, they will simply unsubscribe from it. You'll know about it, you can remove them from the list, and you'll save your account's rating.
Even if the customer opts out, you'll still be able to contact him.
When a person clicks the unsubscribe button, they're trying to opt out of a certain type of message. Promotional campaigns may not always be welcome — but a notification that a long-awaited order has been handed over to the courier is a different story.
If you don't include an unsubscribe button, the customer might just hit "Report" and block you. The "Unsubscribe" button gives them a softer way to say no.
The button will be useful in "Marketing" templates.
Don't add a button to every message in a row. It might encourage the customer to unsubscribe.
It's best to attach a button to such messages:
When you create a template, add a button with the text "unsubscribe". You can choose a different text, but it should be clear that the client is unsubscribing.

The button works just like other text buttons in templates. If a client wants to unsubscribe and clicks on it, you will receive a message with the text from the button.
Some tips on how to respond to a customer's unsubscribe message:
