How to return to Yahoo! Mail Classic: In Firefox go to Tools and open Options. Under the Content tab uncheck “Enable JavaScript”. Open Yahoo mail URL and login using your id and password. A notice will appear saying that JavaScript is needed to be enabled for using the new Yahoo! Now you are back to the classic version.
How to return to Yahoo! Mail Classic: In Firefox go to Tools and open Options. Under the Content tab uncheck “Enable JavaScript”. Open Yahoo mail URL and login using your id and password. A notice will appear saying that JavaScript is needed to be enabled for using the new Yahoo! Now you are back to the classic version.