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WhatsApp questionsUpdated 21 September 2026

What is a WhatsApp opt-in?

The customer's clear agreement to receive WhatsApp messages from your business — a ticked box, a yes in reply, a number given for updates — required by Meta before any marketing template and by India's DPDP Act as recorded consent.

The short answer

The customer's clear agreement to receive WhatsApp messages from your business — a ticked box, a yes in reply, a number given for updates — required by Meta before any marketing template and by India's DPDP Act as recorded consent.

The customer's clear agreement to receive WhatsApp messages from your business: a ticked box on a form that names WhatsApp, a reply saying yes, a number typed into a sign-up for updates, a message they sent you first. Meta requires one before a marketing template is sent; India's DPDP Act asks for it to be recorded with its source and time, and for a withdrawal — STOP — to be honoured at once.

A customer who messages you has opened a window you may reply in; that is not an opt-in to marketing. A number on an invoice covers utility messages about that transaction, not offers.

Opt-in and consent rules in India is the full guide.

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