The new Yahoo mail does not come with the box that mass deletes emails 40, or 100 at a time. I get a ton of emails and deleting one by one will take forever and takes time away from other things I need to do. Also, the new look for Yahoo mail does not separate the ads from the emails very well visually. As I deleted emails, all of a sudden I would accidentally click on an ad and it would open up another window. Then I have to close that window out to return to my mail. This happened a lot the one time I used it and it was frustrating. I now have called customer service and changed my email back to the old version in settings. There is nothing wrong with the old email and the way it looks on the screen, so please do not change it.