Courier is a notification infrastructure platform that helps developers send and manage product messages across email, SMS, push, Slack, and in-app channels from one API. It combines templates, provider routing, fallback logic, and logs so teams can build reliable notification workflows without stitching together separate services.
Pricing is tiered: free for low-volume testing, paid plans typically start around $250/month for higher notification volume, more users, and longer log retention, with custom enterprise plans for SSO, compliance, SLAs, and large-scale workloads.
Proprietary
Courier is a strong choice for product teams and developers who need reliable multi-channel notifications without building their own infrastructure. Its biggest strengths are its unified API, template editor, and provider fallback system. The main tradeoffs are pricing at scale and limited depth for non-technical marketing use cases. It is best for teams building transactional emails, in-app alerts, push notifications, and customer-facing notification flows.
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