Sorting items in Outlook folders
Sort by column heading
Column titles are across the top of each column in a mail folder.
The column headings, Received, Size, From, and Subject, listed in the graybar area can be clicked to sort all the messages in that list by that heading in alpha order, or date. The order will toggle between ascending and descending.

The snapshot above is sorted by the From field in Ascending order.
This sorting feature can be helpful when you are organizing messages to move them to a Personal Folder for cleanup.
The grouped messages can be easily highlighted and moved or dragged as a group to a specific Personal Folder.