Courier

Courier (trycourier, courier.com) is a developer-first notification infrastructure platform that abstracts email, push, SMS, in-app inbox, and chat (Slack/Teams) behind a single API and a visual template designer. For push specifically, Courier is an orchestration layer rather than a push delivery network of its own: it routes to roughly a dozen underlying push providers, APNS, Firebase Cloud Messaging, Expo, OneSignal, Airship, Pusher Beams, MagicBell, Pushbullet, and others, while adding preference management, routing, batching, throttling, and a unified send endpoint on top. Its native iOS, Android, React Native, and Flutter SDKs handle device-token registration and automatic delivery/click tracking, which is the part of push that teams most often get wrong by hand. The core pitch is "design once, deliver to any channel," so push is rarely sold standalone, it is one channel inside a broader cross-channel notification system.

The product is aimed at engineering teams that want to stop maintaining bespoke per-provider integrations and want non-technical stakeholders to edit templates without a deploy. Courier wins on developer experience: documentation, logging/observability, multi-language SDKs, a CLI, and a first-party MCP server for coding agents are repeatedly praised, and reviewers consistently rate it highly on ease of setup and ease of doing business. It is less compelling for teams that only need raw, high-volume push and nothing else, since the value is in orchestration and the visual layer. The Handlebars-based templating has a small learning curve, and a few users report latency during peak periods.

Pricing is genuinely simple and transparent, a 10,000-send/month free Developer tier, then flat pay-as-you-go at $0.005 per send on Business, with Enterprise adding SLAs, RBAC, EU data residency, and volume discounts. Because pricing is per-send across all channels rather than per push specifically, Courier can look expensive next to a single-purpose push vendor at very high volume, but competitive for teams consolidating multiple channels. Reliability is strong: the public status page shows 100% 90-day uptime on the core API, web app, and Inbox, with only minor observability dips, and Courier publishes a 99.9% uptime SLA for its EU region.