I don't know how many of you use yahoo mail on a regular basis, but I 
found a tool a couple of days ago that is pretty useful.  YahooPOPS! 
allows you to use your standard POP3 Mail client to download Yahoo email 
to your computer.  I just happened on it at a website mentioning 
someones fav. software.  Anyway, it will download your email from 
multiple folders and delete email off yahoo, delete bulk email etc.

yahoopops.sourceforge.net  It works on Windows, Linux, Sun, OS X.