I want to go back to classic yahoo?

no i dont think we can

My screen TVs split how do I make it single screen 

there is an envelope icon on half my email page.  what is it and how do I get rid of it

I think that we would all love to go back to classic yahoo but 'they' don't intend allowing us to do that.

Can I switch back to the previous version of Yahoo Mail?

It's no longer possible to switch back to the classic version of Yahoo Mail. It has been discontinued. There are currently 2 versions of Yahoo Mail for desktop web browsers that you can use: Basic Mail and the full-featured Yahoo Mail.

This current version of yahoo with their targeted ads popping up while ITRY to read articles SUCKS!!!! I sent in a comment asking how I can turn this off as I have a Chromebook AND use AD-Block for this very reason. Of course, NO REPLY!!! I am about to CLOSE my yahoo mailbox and quit using YAHOO all together!! Why can t we close these targeted ads or opt out, Yahoo? An answer or a fix would be nice.

Sorry but you can’t

you are not , yahoo is out with the old in with the new

i like the upgrades despite all the burps and flaws. however its all about advertising money, they needed to upgrade to sell advertisements in the margins. imo

It's no longer possible to switch back to the classic version of Yahoo Mail. It has been discontinued. There are currently 2 versions of Yahoo Mail for desktop web browsers that you can use: Basic Mail and the full-featured Yahoo Mail: https://help.yahoo.com/kb/sln15936.html