I certainly do not like the format of the Mail presentation. The space for the actual mail is now restricted as space is taken by the folders and the Inbox. Previously we could see the inbox fully and when a mail was selected the entire space was given to the mail. That makes easy reading. When looking at a mail we do not want to simultaneously see the other items in the inbox
Hello – Thank you for taking the time to offer your feedback and for using outlook.com.
From the sounds of your description it sounds like we have a setting for the view you want. When you are logged in click on the gear in the top right hand corner. From there, you will likely want to disable the reading pane. This will then list all of the emails that are in your inbox. And then when you click on one it will load in the full screen.
Hope this helps