Access mail archives by date, thread, author and subject

period	re-sorted			messages
January to March 2001	by thread	by author	by subject	1
April to June 1999	by thread	by author	by subject	1
January to March 1999	by thread	by author	by subject	3
July to September 1998	by thread	by author	by subject	1
January to March 1998	by thread	by author	by subject	4
October to December 1997	by thread	by author	by subject	427
July to September 1997	by thread	by author	by subject	78