After you have read the message on the BlackBerry, you can use the wheel to mark the message as unread, run "reconcile now", then delete the message _only_ on the handheld. That procedure will leave the messages unread in Outlook. This way you can peek at the message, determine that you'd rather read it in Outlook, mark it unread, reconcile now, delete it only on the handheld, then view it in Outlook at your leisure.