A number of people are asking the same question with similar concerns.
There are only TWO versions of Yahoo! Email left, Classic and the new Regular. All the other Yahoo Email versions Yahoo! has dropped and eliminated. They no longer exist, and I have not found any links to go back to them.
The only old version that you can return to is Yahoo! CLASSIC.
There still are several options available for you.
#1) These links are still working today, July 30, 2011 and will RETURN and launch your email back to the ORIGINAL Classic Mail, but you may need to continue clicking on the links each time you log in. It would be good to bookmark them, save to your favourites or email them to yourself.
as will this link: http://us.mc598.mail.yahoo.com/mc/welcom…
If you click on the link and it does not automatically open to Classic mail, copy & paste the address from your browser into a new window, and press enter.
A number of people have told me the links DO continue to work for them.
As I was checking to see if they were still functioning at a friend’s, one of those links above launched into a full page of advertising for the new mail, in the small print ¾ of the page down and to the right there was an option to click that said ‘Return to Classic’. I immediately took a screen shot and saved it as a picture, and had another friend do the same. The second photo is the Canadian version.
This is what it looks like: https://sites.google.com/site/classicyas…
(This link takes you to a site I made to share with you so that you could see what the screen looks like and WHERE to click).
These links make the ‘choose this option’ come up, and MAY work for you if you have only logged into the new email ONCE otherwise they do not work at all or will only open the new Yahoo! mail:
Launch to choose new or stay with Classic Canada Yahoo link: http://ca.mg2.mail.yahoo.com/neo/
Launch to choose new or stay with Classic USA Yahoo link: http://us.mg2.mail.yahoo.com/neo
The report from Yahoo! Is that you will need to choose EVERY TIME you open your email to stay with Classic mail, and click on the proper link until August 15, 2011.
#2) I have a Yahoo! Plus account, there is a built in OPTION there (that is NOT in the free Yahoo! accounts) to switch back to Yahoo! Classic, which I have done and it remains, and perhaps that is an option for you. The Yahoo! Plus account is $19.99 (US) a year.
#3 Numerous solutions for various browsers and different versions of Windows people use, this is the best solution. Link to: is http://answers.yahoo.com/question/index?…
The link is to an answer given by another person, Katie M, who posted a very good answer that addresses browsers and Windows here on Yahoo! Answers to help you switch back.
From what other Yahoo! users have email to me and from what I have read on some other Yahoo! Answers posts, disabling the scripting and lowering the resolution does NOT permanently work on a number of computer, primarily those running Windows 7. You will need to either disable scripting or lower resolution each time you log in. For others it continues to work.
Let Yahoo! know that you would like the original Yahoo! Classic instead of the new.
If you would like to keep working with the new mail there are a number of things you can try. Update your Adobe Flash Player, and Java script. Check for updates for your Windows. Check for updates for your browser (s) Internet Explorer (IE), Safari, Google Chrome, Modzilla Firefox etc. Clear out your cache, cookies, temporary files and browsing history. The easiest method to clean out those files is press simultaneously Ctrl, Shift and Delete keys while your browser window is still OPEN. This also deletes your passwords and banking information. Or view this page for further information: http://www.wikihow.com/Clear-Your-Browse…
You may consider trying an alternate browser.
Hope that helps you.