How Configure webmail in Yahoo

Login to your Yahoo

Click on Setting.

See the Screenshoot 

Click On More Setting

see the right side on page on screenshot

Click on mailbox

Then click on Add

Enter Email Address

Click On Next

Verification Email will be sent to your Webmail Email address.

Check your webmail inbox and click on Email which Yahoo sent

In side Email which already sent from Yahoo

Click on text ( Click Here ) 

See the Screenshoot. 

Your Almost Done