Outlook for Mac 2011: How to find the folder where a message is stored?
The easiest method to show which folder an email is currently located is to right click on the header bar in Outlook and add the "folder" (visible columns have a check mark to the left of it) column to the current view. This will show you which folder said email is contained in when you perform a search. If you no longer wish to have the "folder" seen in the current view just reverse the process to hide it again. If this is your only customization to the current view you can alternately choose to "reset to defaults" by right clicking on the header bar and choosing the reset to defaults action.