When clients provide you with their cell phone number and consent to receive messages from your company over WhatsApp, this is opt-in. Before sending a consumer a WhatsApp message, opt-ins must be gathered.

Indicate in writing that a user has consented to receive messages from your company via WhatsApp.

Properly identify the company that a person has chosen to receive messages from.

Comply with applicable law.

This has previously been accomplished through a third-party channel. WhatsApp modified its policy in July 2020, stating that third-party opt-ins are no longer required.

This implies that a client might ask to receive notifications directly from your support staff through a WhatsApp conversation thread.

It's crucial to keep in mind that despite this policy change, you still must store opt-ins and ensure that every client you contact via WhatsApp has consented to receive messages from you through that channel.