Craigslist Autoresponder

I am looking for an Android App that will search Craigslist for keywords, negative keywords, price range, multiple cities. I would also like the app to refresh the search results every 20 minutes or so and autorespond to ads using the email accounts I have in my phone. There already is an app similar to what I want called Craigslist Notifications, but it doesn't have an autoresponder. The app would need to rotate email accounts every 5 or 6 emails sent.