I am so glad to be able to revert back to the old format. After decades of using Yahoo Mail, I was really looking forward to a new look. However, the new format has turned out to be nearly unusable. No, actually, in several situations it is "literally" unusable. First, for color blind people like myself, the fact that all email in the left hand column end up being the same color is problematic. I understand there is a little blue line to the right hand side, but the old set-up, with the active email in grey with all inactive emails in white, was very easy to distinguish.

Then there is your search screen. I "literally" cannot read the letter that I open at the bottom of the screen because of the inexplicably large window that opens at the top of the screen. Here is a screenshot:

https://drive.google.com/file/d/1FvvpD5TtrkAFIX92E5ZCUOTeMCZLmFCN/view?usp=sharing

Did you actually field test these features? It seems hard to believe. I have been a loyal Yahoo customer for a long time but am considering looking elsewhere. Were it not for the ability to use the old interface, I would certainly be gone.

Sincerely, (Really, I am rooting for you to fix this mess and deliver a product that is actually usable)
John Haynes