AWS IoT offers services for all layers of security, including preventive security mechanisms, like encryption and access control to device data, and a service to continuously monitor and audit configurations.
Amazon SNS enables businesses to send messages or notifications directly to users with SMS text messages to over 200 countries, mobile push on Apple, Android, and other platforms or email (SMTP).
Amazon Simple Queue Service (SQS) is a fully managed message queuing service that enables developers to decouple and scale microservices, distributed systems, and serverless applications.
Gmail is a free, advertising-supported email service offered as part of Google's G Suite, with 15GB of storage, color-coded inbox filters and unsend button.