This serverless microservice architecture uses AWS SAM templates to deploy a scalable email sending system using Twilio SendGrid's Email API. The system receives email events from internal applications, processes them, and sends emails through the SendGrid API. It also tracks data points such as opens, clicks, and delivered emails, making it suitable for enterprise use cases. The microservice is designed to be easily deployable and configurable, with a heavily-commented codebase available in the repository. The system can handle large volumes of outbound emails and can be used to send email blasts at scale. To avoid costs, users can delete the application and its associated resources after testing. The architecture provides a foundation for building a more robust email sending system that leverages SendGrid's tracking capabilities.