How to terminate or close my yahoo account?
Please complete the closing process only if you are certain you would like to remove your entire Yahoo! account and any features you have personalized within the account. After the account closing process is initiated, your Yahoo! account can never be recovered. For details of what happens when you close your account, click here. To remove your entire account, please visit our Account Termination page. You will be asked to sign in to or verify your password for the account you wish to close. Please be sure to read the next page carefully, as important information about your account is included. You can then confirm the closing of your account.