Should I ask customers separately about order updates and offers on WhatsApp?

Yes, WhatsApp recommends it. Get separate opt-in for each kind of message, say how to opt out, and honour every request to stop.

• Permission first: you need opt-in before contacting someone on WhatsApp, and you decide the method.
• Separate by category: the policy recommends a separate opt-in for each message category, such as order updates and offers.
• Opt-out: give clear instructions on how to opt out of specific categories.
• Honour stops: respect any request to block or stop, whether it comes on WhatsApp or off it, such as by phone or in person.