generating {HEAD ~ a mail thread} including {TAIL ~ at least two e mail messages} transmitted and received between a message originator and at least one recipient 
including
generating { HEAD ~ a mail thread } including { TAIL ~ at least two e mail messages } transmitted and received between a message originator and at least one recipient
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH