Tasklist allows you to arrange Outlook tasks in a tree view with any number of nested levels.
Create a task by dragging an email on to your task list. Tasklist turns the email into an Outlook task, and links the email to the task.
Link Word documents and Outlook items, such as emails, contacts and distribution lists, to your Outlook tasks.
Download a free 30-day trial by clicking here. The full version costs $9.95. If you decide not to buy it, you will still have all the tasks, documents and other items you created with it – you will just lose the Tasklist lists and links.