Firebase is a cloud computing service that provides a built-in identity and access management system for mobile app development. It includes Firebase Authentication, which allows developers to implement a password reset workflow in their application. However, Firebase Authentication's email templates are limited when it comes to customization, and it doesn't provide useful analytics about its notifications. Courier is a multi-channel notification service that allows developers to compose the entire notification experience across every available channel, including email, SMS, Slack, MS Teams, push notifications, and in-app notification inbox. It provides a powerful REST API, prebuilt UI components, and a web studio to manage and customize notifications. Integrating Firebase Authentication with Courier enables developers to leverage its extensive feature set, including template customization, internationalization, provider failover, automation across channels, user preferences, and delivery analytics. Using Courier means managing all email templates in one centralized platform.