If you've ever said you'd do something in an email then whiffed on adding it to your calendar, Cortana can now help. As it previewed last year, Microsoft's assistant will check your emails and, using machine learning tech, pick out things you say you'll do. It'll then remind you later with no effort on your part. For instance, if you tell you're boss "I'll send this report," it'll save that as a suggested reminder. If you specified a date and time, it'll automatically ping you and add it to Microsoft's Action Center.