Courier

Send notifications the smarter way

Multi-channel notification routing platform with 150+ integrations and A/B testing.

Our take

Courier is a direct Knock competitor with 150+ integration connectors — a broader channel ecosystem than most notification platforms. The visual notification designer is polished, A/B testing of notification content and channel delivery is built in, and the Automations builder handles complex multi-step notification sequences. The Segment integration is a genuine strength: Segment events can trigger notification workflows without custom API calls. The comparison with Knock: Courier has more connectors and stronger A/B testing for notification optimization; Knock has better multi-tenant support and in-app feed components. Teams choosing between them: multi-tenant B2B SaaS → Knock, consumer apps with large channel diversity and optimization needs → Courier. Both are strong choices over building notification infrastructure manually.

Product roadmap

Courier is expanding its AI-powered notification optimization (send-time optimization, content personalization), building a native in-app feed widget to compete with Knock's component library, and deepening analytics to provide notification ROI measurement. The 150+ integration library continues to grow.