Every developer knows the pain of building an in-house notification system that actually scales. You start with simple email alerts, then users want SMS updates, push notifications, and in-app messages. Soon you're juggling multiple providers, managing user preferences across channels, dealing with template versioning, and watching notification fatigue drive users away. What began as a few API calls becomes months of ongoing engineering work that pulls your team away from building core features.
Knock solves this by providing messaging infrastructure as a service. Its powerful workflow engine orchestrates all your messaging, from transactional to lifecycle messages—across every channel your users expect. Define your messaging workflows once and let Knock handle delivery across email, SMS, push, Slack, and in-app feeds. The system automatically respects user preferences, batches related notifications, and ensures messages reach users on their preferred channels at the right time.
What makes Knock different is its focus on the developer experience. You can bring Knock to your development workflow with environments, version control, and the Knock CLI. Plus it's the only customer engagement platform you can work with entirely from Cursor or Claude Code. Instead of spending months building notification infrastructure, teams using Knock ship complete notification experiences in days.
Built-in analytics show you exactly how users engage with your messages for continuous improvement. Features like observability, version control, and team collaboration tools mean Knock scales with you no matter your size.
Updated 19d ago
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