archiving related e mail messages within {HEAD ~ the mail thread} in {TAIL ~ an e mail client application}, comprising: 
in
archiving related e mail messages within { HEAD ~ the mail thread } in { TAIL ~ an e mail client application } , comprising :
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH