wanted software feature

– the ability, in email, to search for (formerly starred) unstarred items, in order to cover the following scenario: I unstar an old email, and then decide I want to look at it again, but since it is old, it is buried deep in my emails. I may or may not remember enough of its specifics in order to retrieve it by the usual search technique, but this proposed software feature would make it a snap.
keywords: cyberspace, IT, Information Technology, user-friendliness, convenience