> **Warning — The customer unsubscribes by writing over WhatsApp** > > If a customer replies with the word **STOP**, **BAJA**, **CANCELAR** or **UNSUBSCRIBE** (the whole > message, not a phrase that contains it; it doesn't matter if they write it in uppercase, lowercase or > with accents), the Platform automatically marks them **unsubscribed from marketing** — without anyone on > your team having to do anything. From then on, no campaign send reaches them, even if they're still on a > list. You can revert it by hand from the toggle on their record (section 4.2) if the customer asks > through another channel.