it takes too long for the message to show that it has been read

It is too hard to tell which message you are reading

delete messages button in new location

mark message as unread was so much easier, now much harder to do

no button to get to Spam Folder. I OFTEN have emails go there even though they are not spam.

Attached message preview used to open next to the email, now it takes up the whole screen.
I prefer the old way.

Messages are greyed out, but the message you are viewing is also grey.

I can't tell what message I'm looking at.