Change Yahoo Mail New to Yahoo Mail Classic
If you don’t like the new interface of Yahoo Mail, infact the so called Yahoo Mail New, you can always switch back to the classic theme, named “Yahoo Mail Classic”.
To switch back to an older version of Yahoo Mail, you have to follow these steps:
Go to http://mail.yahoo.com and log in to Yahoo Mail.
1. Look for “Options” button
2. Click on “Options”
3. A new menu will open, click on “Mail Classic …”
4. In the message window, that opens, click “Switch to Yahoo Mail Classic.”
This is standard procedure to switch back from Yahoo Mail New to Yahoo Mail Calssic
Unfortunately, for The New Yahoo Mail there is no possibility to switch back to previous versions like Yahoo Mail Classic or Yahoo Mail New.
Probably, to determine a faster transition to The New Yahoo Mail, switching back to an older version is no longer available.