I love that it is easy for my clients (retailers) who receive thousands of emails each day, but don't want or need them any more than necessary! It eliminates those annoying messages from getting pushed in their inboxes - just like we'd hope our customers would do when choosing which store locations should be able use this service as well!! Nothing really at present other then its ease-of implementation into existing email platforms such has Gmail/Outlook etc., great product if you're an old skooler not used too much technology :).