You may need to delete an account from the application if you no longer use a particular mailbox or intend to replace it in the client.
To delete the current mail account and all its data from the application:
1.From the ☰ MyOffice Mail menu in the upper-right corner of the Main Window, select Account Settings.
2.On the Account Settings tab, select the desired account in the pane on the left.
3.On the right side of the screen, click Remove account. The Remove Account and Data window opens.
4.Select the Remove Message Data check box to remove the data from the application.
5.Click the Remove button.
The account and all of its data will be deleted from the application. This will not delete data from the mail server (if you used an IMAP connection).
You can reconnect the desired account.