A quote from their blog: From Yahoo!'s perspective, any signed-in individual engaging with Yahoo! solutions is a valued customer, whether she authenticates making use of a Yahoo!, Facebook, or Google ID.
How To Sign In Yahoo Using Facebook
Login to Yahoo Mail account on PC/Desktop computer
First you need a username as well as password; now open internet browser from your computer/desktop. Then open page www.yahoomail.com on it. To initiate their new "one-click" sign-in merely click on the "Sign in with: Facebook" symbol on the Yahoo! login screen. That's all you need; to get gain access to of your Yahoo mail account.
Login to Yahoo Mail account on Mac computer system
If you are an individual of Mac computer system after that Safari should be your web internet browser. Safari is the best browsing service for Mac OS; Safari is quick, quicker and also easy to use browser. You can quickly access your Yahoo Mail account with it. See, the best ways to login with Yahoo mail account on Safari browser. Merely open Safari as well as type www.yahoomail.com; you will certainly be routed to Yahoo mail sign-in page. To start their new "one-click" sign-in simply click the "Sign in with: Facebook". You are after that totally signed right into Yahoo!
Nonetheless, a word to the wise- you still will not be able to sign right into a mobile or desktop customer utilizing Google OpenID.
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