A quote from their blog: From Yahoo!'s point of view, any kind of signed-in individual involving with Yahoo! services is a valued customer, whether she verifies using a Yahoo!, Facebook, or Google ID.
Sign In Yahoo Mail Through Facebook
Login to Yahoo Mail account on PC/Desktop computer
First you need a username as well as password; now open web internet browser from your computer/desktop. After that open page www.yahoomail.com on it. To start their brand-new "one-click" sign-in merely click on the "Sign in with: Facebook" symbol on the Yahoo! login screen. That's all you require; to get accessibility of your Yahoo mail account.
Login to Yahoo Mail account on Mac computer
If you are a user of Mac computer system then Safari must be your internet internet browser. Safari is the most effective browsing remedy for Mac OS; Safari is quick, quicker as well as easy to use web browser. You can easily access your Yahoo Mail account with it. See, how to login with Yahoo mail account on Safari internet browser. Merely open Safari and also kind www.yahoomail.com; you will certainly be routed to Yahoo mail sign-in web page. To initiate their new "one-click" sign-in simply click on the "Sign in with: Facebook". You are after that totally authorized right into Yahoo!
Nonetheless, an advice- you still won't be able to authorize into a mobile or desktop computer client using Google OpenID.
I wish this write-up can help you. Thanks ...