Knowing that one Paypal account can support multiple email addresses linked to it; Is it possible to identify customers with SAME paypal but different email addresses? For example; a family may only have 1 paypal account (owned by parents), and they setup an email address for their kids; And they purchase using their own email address (2 transactions made); How can I find out that the purchase is from the same family? Does it show on Paypal receipt somewhere that customer ID is the same or whatever? I dont quite see any indication tho. Thx.