Another, much more comfortable way is Yahoo! Messenger. Yahoo! Messenger can be configured to pop up a dialog box and play a sound whenever a new email message arrives in your Yahoo! Mail account.
Get Instant Yahoo! Mail Alerts of New Messages
To get instant alerts of new mail in your Yahoo! Mail account via Yahoo! Messenger:
- Select Login | Preferences... from the menu in Yahoo! Messenger.
- Go to the Alerts and Sounds category.
- Under Alert me when:, highlight I receive a mail message.
- Select the desired notification options under Alert me by:.
- Click OK.

