Reply to Message
I use YouMail for this. Not only does it have a great VoiceMail application, it enables you to ditch calls. You can also set it up so ditched calls get a message stating the number is no longer in service. I used to get calls almost daily from some mortgage places and no matter how many times I asked, they wouldn't remove me from their lists. After about a week of this application being setup, they quit calling me (for the most part). I still get a ditched call about once a month or so. This application is great!