Outlook's search tools will help you perform a thorough search of your inbox and other folders in very little time.
Using the Search Box
To perform a basic search, type what you're looking for in the search box. (Below, a mail folder is used as an example, but the tool is available in most folders.)
Here, we're searching in our Inbox:
Figure 1: The Outlook search box.
Notice the option to search in all mail folders if you haven't found what you are looking for. You can see that as you type, results matching your query will appear in the list. The search term will be highlighted. You can work with the found items as you would any other item.
Once you've found what you're looking for, click the X to clear the search field and view all items.