In Outlook 2007 is it possible to "lock" a message to prevent it from being deleted by accident? I have some saved mail that I need to refer back to from time to time. While multi tasking like everyone else I may not close that reference e-mail when finished. Later in the day I have so many windows open I glance at them and delete what I can. Trying to prevent accidentally deleting a few I wish to retain in my archives...