An email tools that keeps track of, and manages your online subscriptions

You check your personal email address once at night before going to bed to find your valuable time being eaten up by clearing the spam box and unsubscribing from those ghastly online magazines that big brother prostitutes across the internet. Ahh I have an idea, an email tool that tracks and manages your subscription 'that actually works' - from which you can add/cancel any un/wanted emails...