GoldFynch's advanced search system lets you easily identify draft emails even when the word draft is not present in the file name. The steps to do so are:
Step 1. Navigate to the advanced search view by clicking on the icon in the left panel
Step 2. Click on the Create New Search button
Step 3. Click anywhere in the condition box to enter the search criteria. Alternatively, click on the edit icon (the pencil) that appears when you hover over the condition box
Step 4. Change the 'body' parameter to 'draft' and from the value drop-down select 'TRUE'
Step 5. Click on the Execute Search button
All the draft emails in the case will be listed