Eudora is an "email handling" program that Howard has found to be very useful - you can download the program here.
After the program is downloaded and installed the setup for Yahoo looks like this:
Real Name: Sam Spade
Email address: SamSpade@ Yahoo.com
Mail server (incoming) pop.mail.yahoo.com
User Name: samspade
Password will be asked for: (enter Yahoo's password)
SMPT Server (outgoing) smpt.mail.yahoo.com
Reg Code 7996-2055-3556-3931
You can setup the program at other email addresses - consult the Eudora website for instructions.