... the entire screen to get bigger including the menus, list of emails and such down the side. I am guessing, it just will not do that.
Correct. This is a common complaint regarding all of Microsoft Office (Word, PowerPoint, Outlook, Excel, etc.)
Until around 2010, Windows screens were getting ever larger. But now with smaller screens, portables, Tablets, and remote viewing (VNC), there is a need to
increase the size of menu items and widgets with respect to the size of the screen.
Microsoft is reportedly working on a common option with the Microsoft Office suite.