Outlook 2007: Assign Shortcut Keys for Categorizing your Mail and Task Items
Contributed by shamanstears 
June 6, 2007 
Tagged: Microsoft Outlook
By giving each category a shortcut key, you can significantly reduce the time it takes to categorize an inbox full of email as well as a lengthy list of tasks. To assign shortcut keys to your categories, follow these steps:
1. Click Actions, mouseover Categorize, and select All Categories.
2. Click the category that you will assign a shortcut key.
3. Use the Shortcut Key dropdown to select a shortcut key from the list.
4. Repeat steps 2 and 3 for each category that requires a shortcut key.
5. Click OK.
Now when you wish to assign a category to an item, simply select the item and use the preassigned shortcut key for the desired category.