Receive Yahoo Mail from Outlook Express

From the Tools menu, choose "Accounts."
Select the "Mail" tab.
Click the "Add" button.
From the Add menu, click "Mail."
In the text box labeled Display Name, type your name and click "Next."
In the Email Address box, type your Yahoo! Mail address (be sure to include "@yahoo.com") and click "Next."
Under "My incoming mail server is a..." select "POP3."
Type "pop.mail.yahoo.com" in the Incoming Mail (POP3, IMAP, or HTTP) Server box.
Type "smtp.mail.yahoo.com" in the Outgoing Mail (SMTP) Server box.
Click "Next."
In the Account Name box, type your Yahoo! Mail ID (your email address without the "@yahoo.com").
In the Password box, type your Yahoo! Mail password.
If you want Outlook Express to remember your password, check the "Remember password" box.
Do not check the boxes labeled "Log on using Secure..."
Click "Next."
Click "Finish."

Then:
From the Tools menu, choose "Accounts."
Select the "Mail" tab.
Double-click the account labeled "pop.mail.yahoo.com."
Select the "Servers" tab.
Check the box next to "My Server Requires Authentication."
Click "OK."

To control deletion of messages from the Yahoo! Mail Server:
From the Tools menu, choose "Accounts."
Select the "Mail" tab.
Double-click the account labeled "pop.mail.yahoo.com."
Select the "Advanced" tab.
In the Delivery section at the bottom of the window, check "Leave a copy of messages on server" if you want to save your Yahoo! Mail messages on the Yahoo! Mail server as well as on your local computer. Do not check this box if you want your messages to be deleted from the Yahoo! Mail server once you have received them in Outlook Express.
If your ISP blocks port 25 or if you're unable to send email, then you will need to use port 587 when sending via Yahoo!'s SMTP server. To make this change, please follow the directions below:
From the "Tools" menu, select "Accounts"
Select your Yahoo! POP account and click on the "Properties" button
Click on the "Advanced" tab
Next to "Outgoing server (SMTP), change port 25 to 587
Click "Apply", then click "OK" and "Close"