Direct Message beta features

In order to enable new types of experiences on Twitter we are upgrading our Direct Message REST endpoints. Currently in beta, these new endpoints and features will enable developers to build better personalized customer experiences at scale as well as other innovative interactions. To help create more engaging human- and bot-powered customer service, marketing, and engagement experiences in Direct Messages we’re providing developers access to endpoints to start conversations with a welcome message, publish messages with quick replies and media, and more.