Last updated:
09.03.2026
Opt-out (Newsletter unsubscription)
An opt-out is the revocation of consent to receive marketing messages. Customers must have the option to unsubscribe easily and at any time – a clear GDPR requirement.
hellomateo makes opt-outs simple: A STOP keyword is all it takes; the system processes the unsubscription automatically and immediately – without any manual effort.
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In a non-binding conversation, we'll show you how to use messenger communication in compliance with GDPR, automate processes and achieve measurably more revenue and efficiency with WhatsApp. Clear, practical and tailored to your company.
The opt-out is the counterpart to the opt-in. As soon as a user objects, they may no longer receive marketing messages. GDPR and the German Unfair Competition Act (UWG) stipulate that this revocation must be possible at any time, easily, and without giving a reason.
Opt-out on WhatsApp
Customers can send STOP, click an unsubscribe link, or contact us directly. hellomateo automatically recognizes opt-out keywords and processes unsubscribes immediately.
Consequences of ignoring an opt-out
Clear GDPR violation: fines, warnings, and blocking of the WhatsApp account by Meta. hellomateo prevents this through real-time processing.
Opt-out as an opportunity
Reasons for unsubscribing help to make campaigns more relevant. hellomateo enables optional exit surveys for valuable feedback – and makes the remaining list higher quality. List Quality: Clean opt-out management improves open rates, quality scores on meta, and reduces spam reports.