Yahoo! Business Email is a password-protected system. Other users will not be able to read mail in your email account unless they have your Yahoo! ID and password. Always keep this information confidential. Yahoo! will never ask you for your password in an unsolicited phone call or email.
For additional security, especially on public or shared computers, each time you exit your email account, you should sign out completely, clear the cache and close the browser. Then, if another person uses the same computer, they will be returned to the sign-in screen if using the Back button or browser history to access Yahoo! Mail.
If you would like to update the registration information for your email account, including changing your password and updating your alternate email address, please visit Account Information.