Today we launched Courier Inbox, a set of APIs and UI components for building a modern application inbox. To test this proposition, we decided to use Courier Inbox to build something lightyears away from a product inbox. We created an Instagram clone called Puppygram that is built for iOS and powered by Courier Inbox, Next.js and Inngest. The app fetches random pictures of cute dogs using the random.dog API and sends notifications to our Inbox every minute. We also built an iOS app that custom renders notifications with the Courier iOS SDK. Courier makes it easy to send SMS, email, push and in-app notifications with a single API call.