Knock

What Knock is

Knock is customer engagement infrastructure for your product, marketing, and transactional messaging. Activate your data, ship cross-channel messaging, and accelerate growth.

Who it's for

Product teams, marketers, and operators who need to ship messaging across channels without sacrificing design or performance.

Why it's notable

One platform to manage all your messaging—product, marketing, and transactional. Purpose-built for control, speed, and collaboration.

• Ship messaging without limits with flexible, AI-native tooling across email, SMS, push, chat, and in-app
• Build complex messaging journeys with a single prompt
• Deliver messages when and where your users expect them
• Ingest data in real time from your product, tools, and warehouse to trigger relevant messaging