Unlike previous versions of Outlook, when you search for items in the inbox folder, Outlook 2013 will search the entire mailbox. This means items from other folders will be included in the results page unnecessarily.
Most Outlook users are accustomed to navigating to a folder and then searching for the specific message they need. In Outlook 2013 the search is more global and encompasses all folders. For many people with large mail collections, searching all these folders can be quite slow and painful.
The following steps will help you configure the Search box to look for items in the current folder of use only. Please note that the tutorial is written based on the preview version of Office 2013. The steps may change in the final version of the suite. Please let us know in the comment field if changes are needed.
Launch Outlook 2013.