I don’t use Yahoo Mail because you have to pay $20 just to POP3 it to your third party email application. (Outlook, Thunderbird, etc)
However, this nifty free program, YPOPs! provides a POP3 server interface to talk to Outlook, etc and on the other side it talks to Yahoo! Mail by using normal HTTP protocol. The program is not a violation of Yahoo! Mail TOS and is not illegal.
It’s worth a whirl if you want to check your email on something other than web based browsers. Read on…