| Icon | Description |
 | Unread message |
 | Message you have replied to |
 | Message you have forwarded |
 | Message you have replied to and forwarded |
 | Message sent to you only |
 | Message sent to you and a few people |
 | Message sent to you and many people |
 | Message the sender has marked high importance |
 | Message you have marked for high priority follow-up action |
 | Message you have marked for normal priority follow-up action |
 | Message you have marked for low priority follow-up action |
 | Message includes one or more attachments |
 | Message you sent |
 | Message or meeting invitation you saved as a draft |
 | Online status of person is Available |
 | Online status of person is Away |
 | Online status of person is In a Meeting |
 | Online status of person is Do Not Disturb |
 | New meeting invitation or to do assignment |
 | Meeting invitation you accepted |
 | Meeting invitation you tentatively accepted |
 | Meeting or to do reschedule notice |
 | Meeting or to do information update notice |
 | Meeting or to do confirmation notice or reminder message |
 | Meeting or to do cancellation notice |
 | Meeting invitation or to do assignment you sent has been accepted or tentatively accepted |
 | Meeting invitation or to do assignment you sent has been declined |
 | Meeting invitation or to do assignment you sent has been counterproposed |
 | Comments notice for a meeting invitation or to do assignment you sent |
 | Appointment calendar entry |
 | All-day event calendar entry |
 | Anniversary calendar entry |
 | Reminder calendar entry |
 | Private calendar entry |
 | Group to do assignment |
 | High priority to do item |
 | Medium priority to do item |
 | Low priority to do item |
 | Completed to do item |