If a recipient of the email selects one of the product images presented in the email, an identifier of the selected image and {HEAD ~ information} about the email recipient are forwarded to {TAIL ~ the product vendor} 
are forwarded to
If a recipient of the email selects one of the product images presented in the email , an identifier of the selected image and { HEAD ~ information } about the email recipient are forwarded to { TAIL ~ the product vendor }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL