We're building an integration between Foxycart > Klaviyo, and trying to decide on our unique customer identifier to minimize duplicate/alias profiles in our email marketing software.
It appears that if a customer checks out as a guest (i.e.,
"is_anonymous": false), their email can appear multiple times under
fx:customers. So, as long as the customer is a "guest" we'd use their email as the unique identifier. But if a customer registers, I have a few questions:
1) If a registered customer changes their email, will they still have the same customer
2) Is it possible to find the same customer
"is_anonymous": true and
"is_anonymous": false customers?
3) Is it possible to find the same customer
id between two different foxycart stores?