Help! My email inbox is a mess!

If you are like me, you don't move emails from your inbox until the action item is complete.  Distinguish between action items you are responsible for (i.e., To do) and action items you are waiting for someone else to do (i.e., waiting for) by assigning "To do" and "Waiting for" categories.  I like to mark my "To do" items with a red flag and my "Waiting for" items with an orange flag.  This helps me see at a glance what the next action is on everything I am ultimately responsible for.