Setup Yahoo Mail in BlackBerry Mail
BlackBerry devices come with a pre-installed email app. While this app won't give you access to more advanced features found in the Yahoo Mail app, such as managing folders, your account info, and themes, you can add a number of Yahoo Mail accounts to send and receive emails from it.
A Yahoo Mail account and BlackBerry Internet Service (BIS) are required in order to access Yahoo Mail in BlackBerry Mail. Enjoy using your favorite email app and set up Yahoo Mail on your BlackBerry device.