Do you want to see the date items were added to the Drafts folder? If so, you’ll need to use a custom view and add the Modified date field to the view and sort by it.
The default view uses the Sent date field, which is naturally blank (displayed as None) because the message hasn’t been sent yet. The Received date field would also work, although users with Exchange mailboxes may notice the received date is the date the draft was first saved and may not match the modified date if you access the mailbox from multiple computers. (The received date should match the modified date when you use a pst file or open the Exchange mailbox on only one computer.)


Add the Modified Date to the View
To add the Modified field to the view:
Right click on the row of field names at the top of the message list, were it reads "Arrange By: Date"- Choose View Settings (Outlook 2010) or Custom (Outlook 2007 and older)
- Click the Columns (or Fields) button to open the Show Columns dialog (screenshot)
- Select date/Time fields from the "Select available columns from" menu
- Click Add to add it to the view then close the dialog
- Click the Sort button to open the Sort order dialog (screenshot)
- Select Date/Time fields from the "Select available field from" menu
- Select Modified in the top Sort field selector then close the dialogs and return to Outlook.
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Last reviewed on Feb 10, 2012

Great thanks Diane for this useful info.
Cheers