Depending on which Chat-in type new users come from, there are specific ways to trigger a welcome flow for them:

• WA.ME Link based Chat-in —> the flow is triggered by the message pre-filled in WA.ME Link
• Sign-up form based Chat-in —> the flow is triggered by completion of an order confirmation

WA.ME Link based Chat-in —> the flow is triggered by the message pre-filled in WA.ME Link

If a contact comes to your WhatsApp chat via WA.ME Link, there is a pre-filled message that you are hoping the user is sending to you. Make this message the trigger for your welcome flow.

Sign-up form based Chat-in —> the flow is triggered by completion of an order confirmation