The navigation pane provides quick access to the major areas of IBM(R) Lotus(R) iNotesTM, allows you to log on and change your Lotus Sametime(R) status, check the size of your mail file, and open views and folders.
The usage indicator displays only if your administrator set a quota for the size of your mail file. Note that your mail file includes not only messages, but also calendar, to do, contact, and notebook entries.
Change Your Instant Messaging Status