Well, you can go to answers.Yahoo.com and on the top-right there's a mail option. It's next to"Sign In".
left top
Press toolbox button (gear looking icon) top right. Select 'mail options' from submenu. At bottom of site that loads after awhile is radio button which under switch now has "basic" Select it and it should switchuntil Yahoo forces a change in the future.
Go to your options. There you will see Yahoo mail classic. Press that and there you have your old Yahoo mail classic.
To get Yahoo Mail Beta, just switch your content preference to Germany, France or UK. Then you will be asked if you want to join the beta when you log into your Yahoo Mail. Say yes, and join the beta. Then from the options menu, change your content preference what it was before. Then go to Yahoo Mail again. You should see Yahoo Beta. If you don't see it, go to options and click "Try Beta" button. That's all.
From yahoo mail click options and select 'Switch to Yahoo Mail! Classic'.
first click on the 'options' button at the top.a menu will appear.choose the themes option & choose your fav one !
Go to the top of the page and click on the button left to the sign-out button and click on "Switch back to my account"
If you sign into your mail and go to the top right-hand corner, there should be an "Options" link. Click that and a drop-down menu will appear with an option for Yahoo Mail Classic.
On the left hand side there is a button for new mail, mail you sent and mail you deleted.
Disable java. tools-> options ->content (Firefox) Restart Yahoo mail, you will then see screen giving option one time prior version or permanent. Select permanent.
The link for access Yahoo! UK's mail feature by navigating your browser to the Yahoo! UK homepage and clicking on the "Mail" link underneath the "Search" button at the top of the page. From there, you can register for a new account or sign in using your existing account to access the Yahoo! UK mail feature.
Right click on the folder you want to delete. Read the options you want to do with that folder. Then, there should be a button that says "Delete Folder". Click on that and it will delete it.