Access mail archives by date, thread, author and subject

period	re-sorted			messages
April 1998	by thread	by author	by subject	1
March 1998	by thread	by author	by subject	1
February 1998	by thread	by author	by subject	1
December 1997	by thread	by author	by subject	1
January 1997	by thread	by author	by subject	3
March 1996	by thread	by author	by subject	2
February 1996	by thread	by author	by subject	7