Your lead sees your Facebook Ad or your website and fills in the Opt-in form (Lead Ad Form) giving details like Name, Phone Number, and Email etc.
As soon as the form gets submitted, you get a WhatsApp message on your mobile like “ABC person has filled your form and is interested” and your lead also gets a WhatsApp message like “Thanks for your interest. We have received your information and get back to you”
Automatic Nurturing sequences can also be started - like time-to-time updates to the Lead on their WhatsApp with the end goal of converting the lead into a lucrative client.