How to mass delete Twitter direct messages. A premium Twitter feature in the future?

Today, @pipercarter sent a tweet saying "Twitter needs to come up with a way to mass delete all of these fake DM's.". Ironically I sent her a DM saying there is a way to mass delete twitter direct messages using a site called http://www.dmcleaner.com but it is not a feature from Twitter but a third party web tool.

TriOut For Business explained. A location-based dashboard with messaging. By @LawPower

We are about to release some really exciting updates to TriOut for Business. The beta has been a great success and we have gotten feedback from those businesses that participated resulting in a number of enhancements and new features that add even more value for TriOut customers, both businesses and individuals. We will be sharing the details on the various plans with you over the coming weeks, along with some videos that show you how to use the service to enhance your sales and marketing efforts. If your business is not already listed in TriOut, please contact us and we'll be happy to [...]