Error: The command you specified... (due to Mailbox.pst file being deleted).

Error:


The command you specified could not be carried out. A default set of folders could not be found. Your active profile must include such a set, such as a personal folder file.

Cause:


The default message store has been deleted. This file is usually called Mailbox.pst.

Solution:


Add a 'Personal Folder' via the 'Services' dialog box in the 'Inbox' 'Tools' menu.