Using these icons at the top of your screen —
— you
may search items stored in the vault, move items from your Inbox
to the vault, or restore vaulted items back to your Inbox.
It is important to manage your Inbox so that messages you no longer
need do not take up storage space. Guidelines are available to help
you decide which messages to keep and which to discard. http://www.ucop.edu/irc/services/keepnotkeep.html