Yesterday was tip # 400. While most of these 400 tips are unique, there are quite a few repeats, either because the question keeps coming up or because it's one of my favorite features and a lot of people still don't know about it.

Tips 4 and 5, along with several later tips, cover my all time favorite thing Outlook can do: time and date shortcuts.

Say good-bye to using the time and date pickers! Outlook accepts shortcuts, like 4d (for 4 days from now) or 115p (for 1:15 PM), as well as formulas: 3/14 + 12d (converts to Mon 3/26/2007), and natural language, so you can type Christmas in the date field and Outlook knows it's Dec 25. It also knows three weeks from tomorrow, although 3w + 1 is less typing. :) Although your choices are limited, shortcuts will work in the snooze field - just type a number for the number of minutes, or add a d if you want to snooze it for days.