Organize your mailbox Sent Items. Suppose you have Outlook 2000/2002 users who access additional mailboxes on an Exchange 5.x/2000 server. When they reply to or forward from that mailbox the message goes into their primary (usually personal) mailbox sent items. UniSent is a COM-add-in for Outlook 2000/2002, that scans the sender address of each sent message in the main mailbox Sent items folder and in case it matches the additional mailbox name, moves the message to its Sent items folder.