Users who share a single computer and send and receive e-mail can use the OutlookExpress "identity" feature to keep their mailboxes secret. Here is a brief introduction to you:
On the File menu, point to Identity, click Add New Identity, enter a new user name, and then enter a password for the user. This creates a new identity that you need to enter when you log in or switch from another identity, which protects your identity. If other people attempt to delete or change the settings of the identity, they are prompted to enter the password.
If you want to change the settings for the current identity, on the File menu, point to Identity, click Manage Identities, and then change any of these settings, or click Properties to change the identity name or password.
After you set up multiple identities, if you want to switch to another identity, just click Switch Identities on the File menu, and then select the user you want to switch to.
Once you have established the identity, you can create subfolders and organize contacts as you wish. However, adding a password to an identity does not protect the data from being used by others. If you want higher security, you should create a Windows user profile for each user.
If you want to remove the identity, on the File menu, point to Identity, and then click Manage Identities, and then delete the unwanted identities. When you delete an identity, the corresponding settings are also deleted, but the data is not deleted, and the current identity cannot be deleted.