The "Manage My Services" page, also known as the Business Control Panel, displays a module along the right side of the page labeled "My Contact Info." This section lists the following information for the account:
Yahoo! will use this information to contact the account holder when necessary, such as when an account is past due, suspended, or pending closure. It is important that you review your contact information for accuracy so Yahoo! can reach you with critical account status information when necessary.
If you see information that is inaccurate or that you would like to change, click the "Edit" link and edit the appropriate section.