Knock Reviews — Discover what people think of this product.

Knock is customer engagement infrastructure built for product-led teams that need reliable, data-driven messaging across every channel. It connects directly to your product and warehouse, so you can trigger personalized outreach from real-time events and user attributes without managing brittle custom notification systems.

With Knock, you can design, test, and ship messaging workflows from a single dashboard while keeping developers in full control via robust SDKs and a CLI. Product and growth teams can collaborate in an intuitive drag-and-drop editor to orchestrate journeys across email, SMS, push, chat, and in-app experiences, all while preserving brand consistency.

Key capabilities include:

• Cross-channel orchestration with preference-aware delivery and send windows
• Warehouse-native activation using attributes, events, and relationships for dynamic segments
• Reusable templates and layouts with global styles, live previews, and custom components for in-app paywalls, dialogs, and nudges
• Developer-first workflow with environments, version control, and AI agent support through tools like Cursor and Claude Code

By centralizing notifications, marketing flows, and transactional messaging in one infrastructure layer, Knock helps you ship faster, reduce engineering maintenance, and deliver user-first communication that drives activation, retention, and expansion.