l want to change my mail to old mail?

There is NO link available any more that will take you back to Classic/Original Yahoo Mail. Here is a solution that DOES work and works very well. I have multiple Yahoo accounts and I have used this method with each of them with great success.....

There is a way that just involves a few mouse clicks. It sounds like you have the new Beta Mail (double yuck) and want to go back to the ORIGINAL Yahoo Mail. I have found a way to do just that

For Internet Explorer: Go to Tools/Internet Options/Security, go to "custom level”....scroll down to "Active Scripting". Click on “Disable”. Refresh the page while you are still signed into Yahoo Mail to switch back.

Be sure to go back in the same way and “Enable” Active Scripting again...(and NO it won't revert to the Beta versions of Yahoo Mail)

For Safari: Open Settings, Click on Preferences, Click Security, Uncheck “Enable Java” and then Enable Javascript

For Firefox: Open Tools, Options, Content, Click “Disable Javascript”. Hit f5 to refresh the page while you are still in Yahoo Mail to switch back.

In Options, click “Permanent” to stay in the original version. Do not click the “One Time” option. Voila! You now have Original Yahoo Mail back.

I did it via twist of destiny utilising the two Google Chrome or Opera to income mail, i do no longer keep in mind which, and it reported the browser isn't nicely matched with it. So with the intention to income mail it had to set itself back to the way it became, that's how i wanted it besides.

Click on change to classic button