Sorting by a single column in Outlook is as easy as clicking on the column head. Sorting by multiple columns isn't as obvious -- but it's very easy!
- Sort the first column (like "From") by clicking on the column heading.
- To sort the second column (like "Received) hold the Shift key at the same time as you click on the Received column heading.
This will sort all the messages from a person in chronological order.