A quote from their blog: From Yahoo!'s point of view, any kind of signed-in user engaging with Yahoo! solutions is a valued customer, whether she authenticates making use of a Yahoo!, Facebook, or Google ID.
Log Into Yahoo with Facebook
Login to Yahoo Mail account on PC/Desktop computer
First you need a username and password; currently open internet internet browser from your computer/desktop. After that open page www.yahoomail.com on it. To start their new "one-click" sign-in simply click on the "Sign in with: Facebook" symbol on the Yahoo! login screen. That's all you need; to obtain accessibility of your Yahoo mail account.
Login to Yahoo Mail account on Mac computer system
If you are an individual of Mac computer after that Safari need to be your web internet browser. Safari is the very best surfing solution for Mac OS; Safari is quick, much faster as well as easy to use internet browser. You could conveniently access your Yahoo Mail account with it. See, how to login with Yahoo mail account on Safari web browser. Simply open Safari and kind www.yahoomail.com; you will be routed to Yahoo mail sign-in page. To launch their brand-new "one-click" sign-in simply click the "Sign in with: Facebook". You are then fully signed into Yahoo!
Nevertheless, a recommendation- you still won't have the ability to authorize into a mobile or desktop computer client making use of Google OpenID.
I hope this article can aid you. Thanks ...