Replace "INSERT_EMAIL_OR_UNIQUE_ID" with the dynamic code to get the customer ID. A customer ID is typically an email address or custom number unique to that customer
Question is, what dynamic code should be inserted? My instinct says the AMPscript for email address at this is our subscriber key? But I haven't seen any examples confirming this. If this is the case, will the person only be identified if they click on an email or ad sent by SFMC directly and ignore organic visitors?
Here is the code:
This is the help documentation:
Any assistance greatly appreciated.