One thing that Windows and Outlook have always had up on the Mac’s default email and calendar apps, Mail and iCal, is Outlook’s integrated to-do manager. Today the game changes. Leopard’s new Mail and iCal applications introduce their own take on the email- and calendar-integrated to-do list. So now the question is: Is it any good? The answer: Yes. And no. But probably yes. The To Do manager, at the moment, is a bit of a mishmash of some very good and a few bad—or at least unrealized—features.
The Mail.app To Do feature resides in the Reminders panel of the Mail sidebar below Notes. Mail to-dos can be organized by due date, priority (high, medium, low, or none), title, and calendar (that’s right, they also integrate with iCal). You can create a new to-do in a couple of ways.
A good article for the Mac users!! Go check out the full article!!