The mobile app development industry relies heavily on push notifications to support the full user experience and sustain engagement. However, integrating these notifications can be complex due to various tools, APIs, token management, and more. Courier, a notification platform and API, simplifies this process by enabling developers to easily connect their app to Firebase for sending and automating push notifications. With Courier, users can trigger notifications at the right time and personalize them based on individual preferences and interests. The platform supports multiple notification methods, including email, SMS, chat, and more, allowing developers to build automated sequences that extend across these channels. Courier empowers developers to manage their workflow independently, streamlining the process and bypassing typical back-and-forth between front-end, back-end, and project management teams. By using Courier with Flutter, Firebase, and Node.js, developers can send and automate push notifications efficiently, saving time and resources while maintaining autonomy in the development process.