It isn't possible to change it back. Starting January 31st, 2019, the classic version of Yahoo Mail that you’re using on your computer will no longer be available. To ensure continued access to your Yahoo Mail account, you will be automatically upgraded to the latest version of Yahoo Mail or Basic Mail, depending on the compatibility of your computer’s web browser.
Answers & Comments
The old one no longer exists to go back to, when a new one is sent out the old one goes away.
Yahoo Mail has 2 versions.
1. Basic Mail (heading shows sign out and home in the far top right) -
This is a very basic version for slow internet connections and older computers and operating systems.
You can switch to Basic Mail from Full Featured Mail as follows.
Go to the gear menu and select "more settings".
Click on "Switch to Classic Mail". Yahoo has not changed the menu to indicate "Basic" but that is where it goes. There is no "Classic" anymore.
2. Full Featured Mail (heading shows your name, dots, and home in the far top right) -
You can switch to Full Featured Mail from Basic Mail with the link at the top right.
You can also switch by going to options and then mail accounts and select it there.
It isn't possible to change it back. Starting January 31st, 2019, the classic version of Yahoo Mail that you’re using on your computer will no longer be available. To ensure continued access to your Yahoo Mail account, you will be automatically upgraded to the latest version of Yahoo Mail or Basic Mail, depending on the compatibility of your computer’s web browser.
things will always keep changing
Want my old classic yahoo mail back