How do I sign in or log out from Yahoo mail account?
Access a variety of Yahoo services such as Yahoo Mail, Yahoo Sports and more, by logging in and out of your account from a desktop or mobile device. If you created an account with a non-Yahoo email or one that ends with @ymail or @ rocketmail.com, you must enter the full email address to sign in.
Log in or out with a mobile browser
Sign in or out of a desktop browser
Log out from a desktop browser
To sign out from a desktop browser, hover your name over the top of any Yahoo page and click Sign out.
Increase security: use the account key for secure access without a password.
Login or deactivate accounts in Yahoo applications
Turn off your account in Yahoo applications
Choose which accounts are available in the application by activating or deactivating them.