Changing Message Settings and Delivery Options
To help you manage your e-mail and convey the meaning of your messages more effectively, you can set the importance, sensitivity, and a number of delivery options for e-mail messages.
You can set a message to High, Normal, or Low importance. Messages sent with High importance are indicated by a red exclamation point. Messages sent with Normal importance have no special indicator. Messages sent with Low importance are indicated by a blue downward-pointing arrow. These indicators show up in the Importance column in the Inbox.
You can also set message sensitivity to Normal, Personal, Private, or Confidential. Messages marked as Private cannot be modified after they are sent.
To help you manage messages ...