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Before you can message a customer using WhatsApp, you must collect their opt-In consent to comply with both WhatsApp requirements and GDPR regulations.  This can be done via Online, SMS, Email etc.  Each time Sinch sends a message template on your behalf, we check that the opt-In is still valid.


Because the first message preceding Opt-in must be a template message, that message has already been approved by WhatsApp and therefore the Block and Mark as Spam options are not available.


Learn how you can send WhatsApp messages to your customers easily and securely using the Sinch WhatsApp Business API.

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Last update:
‎06-02-2021 02:04 AM
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