Outlook 2013's Varied View Options
Icon view is the simplest view — it’s just a bunch of icons with names thrown together on-screen.
The only Icon views that come with Outlook are for viewing notes and file folders. An Icon view doesn’t show a great deal of information, and some people like it that way. There’s nothing wrong with using Icon view most of the time; you can easily switch to another view if you ever need to see more.