A quote from their blog: From Yahoo!'s perspective, any type of signed-in user involving with Yahoo! services is a valued individual, whether she validates using a Yahoo!, Facebook, or Google ID.
Sign In Yahoo Mail With Facebook Account
Login to Yahoo Mail account on PC/Desktop computer system
First you need a username as well as password; now open web internet browser from your computer/desktop. Then open web page www.yahoomail.com on it. To initiate their brand-new "one-click" sign-in merely click on the "Sign in with: Facebook" symbol on the Yahoo! login display. That's all you require; to obtain access of your Yahoo mail account.
Login to Yahoo Mail account on Mac computer
If you are a user of Mac computer after that Safari need to be your web browser. Safari is the most effective browsing option for Mac OS; Safari is quick, quicker and easy to use internet browser. You can quickly access your Yahoo Mail account with it. See, the best ways to login with Yahoo mail account on Safari web browser. Simply open Safari and also kind www.yahoomail.com; you will certainly be routed to Yahoo mail sign-in page. To initiate their brand-new "one-click" sign-in just click on the "Sign in with: Facebook". You are after that totally signed right into Yahoo!
Nevertheless, a word to the wise- you still won't have the ability to authorize into a mobile or desktop client utilizing Google OpenID.
I hope this short article could assist you. Thank you ...