Does spam detector actually do anything?

For years now I have been sending spam e-mails to my spam detector, but I keep getting the same spam over, and over, and over again.  As far as I can see, the only e-mails that go to my spam detector are the ones that I manually send there.  Does the Verizon e-mail spam detector actually function in identifying spam and interdicting it?  If so, what do I need to do to get it to work?