Online Calendars and Task Managers
Your inbox is your task list, and firmly under the control of everybody but yourself, they say. Now, is it "your" calendar, too? Better take control — with an online calendar and task manager, for example, ideally one that integrates well with your email service or program, of course.
Sparrow for iPhone - iPhone Email Program Screenshot - About Email
What does the Sparrow for iPhone iPhone Email Program look like?