There is another snippet that allows entries to be added to a “Recently Viewed Items” table for a profile. Calling the Klaviyo object’s trackViewedItem function below will populate a product feed of recently viewed products that can be included in emails. For more information on how to use the “Recently Viewed Items” feature in a template

More information on the Klaviyo snippet can be found Klaviyo 

Parameters

This parameter is optional and can be defined by users