zmmailbox -z -m
admin@domain.com emptyFolder /foldernamelikeInbox
or set the
email message lifetime to 1 day (easily found in admin console > account> advanced> bottom of page)
-this is the lifetime that an email message can remain in any folder
-0 means don't delete
-see also trash and spam lifetimes
-let us know if you want the CLI for this