- To check if you are currently signed in to Yahoo Mail, go to mail.yahoo.com
- If you get a Sign-in form asking for both username (email address) and password, you are already signed out! (Make sure to do that in the same browser used to check your emails.)
- If it shows a Sign-in form asking only for a password, click on "Sign in as a different user" at the bottom: this makes Yahoo "forget" your username, and you should get a blank form.
- If you arrive in your Yahoo Mail inbox, you are fully logged in: click on the "Sign out" link (near top left). Click on "Mail - check email" button near the top right corner of the next screen, and you should get a blank form: if so, logout was successful!
Tip: when you logout of any Yahoo service (Yahoo Mail or otherwise), it will sign you out of all of them. That also includes properties Yahoo owns like Flickr.
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