Name: specialuse_protect
Type: STRING
Default-Value: \\Archive \\Drafts \\Important \\Junk \\Sent \\Scheduled
 \\Snooze \\Trash
Last-Modified: 3.1.7

Whitespace separated list of special-use attributes to protect the
mailboxes for.  If set, don't allow mailboxes with these special use
attributes to be deleted or renamed to have a different parent. Default is
the built-in list
