a thread body interval containing a start line interval and {HEAD ~ an end line interval} representing {TAIL ~ length} of a mail body of one of the at least two e mail messages within the mail thread and inserted into a thread body field such that the thread body interval is re calculated when each newly added e mail message is transmitted 
a thread body interval containing a start line interval and { HEAD ~ an end line interval } representing { TAIL ~ length } of a mail body of one of the at least two e mail messages within the mail thread and inserted into a thread body field such that the thread body interval is re calculated when each newly added e mail message is transmitted
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH