To log out of the current account:
1.From the Mail tab in the Folder Pane, select the desired account. The Account Dashboard opens.
2.In the Connect accounts area, click the Remove account button. The Remove Account and Data window opens.
3.Make sure the Remove message data check box is cleared to keep the data in the application.
4.Click the Remove button.
The current account will be disconnected from the application, but the selected data will be saved.
You can reconnect the desired account.