Why opt-in protects your number
WhatsApp's policy says people should expect the messages they get. When they don't, they block or report the business — and that lowers your quality rating. Meta can then limit how many people you can message. Clear consent, and an easy way to stop, keeps your number healthy.
Meta lists several ways to collect opt-in, including your website, SMS, a phone call and in person or on paper. Step-by-step: how to collect WhatsApp opt-ins.
Send only to people who said yes
With Lead Pattern's WhatsApp broadcasting you send campaigns to the customers who opted in. Before a big send, run your message through the spam checker.

