Build an Interactive Messaging App with Stream, MML, Node and React

Message Markup Language (MML) provides a standardized way to create interactive messaging experiences by embedding elements like buttons, date pickers, and custom forms in chat applications. MML can be utilized in React applications via the MML React library, with the Stream Chat React SDK being the first to support it. To implement MML, developers need a basic understanding of Node.js and React, with tools such as create-react-app, Stream Chat, Express.js, and localtunnel used to build both frontend and backend components. The tutorial outlines creating a chat app where users can schedule appointments through custom MML commands, which interact with a backend server using webhooks for processing and responding to user actions. The backend verifies requests and integrates with Stream for real-time messaging, allowing the creation and storage of appointments with the option to add them to a calendar. This setup highlights MML's flexibility and Stream's webhook capabilities, offering developers tools to enhance user engagement in chat applications.