Amazon Simple Email Service (Amazon SES) vs. Courier

Amazon Simple Email Service (Amazon SES) is a cloud-based email platform designed to facilitate high-volume email communications for businesses and developers. It enables users to send transactional emails, marketing messages, and newsletters without the need to manage complex email infrastructure. With Amazon SES, you pay only for the emails you send, making it a cost-effective solution for organizations of all sizes.

Courier is notification infrastructure for customer messaging, built for humans and AI agents. It sits between your app and every channel you send on: email, SMS, push, in-app inbox, chat, and webhooks. You send one request, and Courier works out where it goes, what it looks like, and whether the user wanted it at all. Teams use it for the messages a product has to send: onboarding, alerts, receipts, reminders, and account notices. You keep the providers you already pay for. Courier is the layer above them.