Knock

Notifications infrastructure — orchestrate email, push, SMS, and in-app messages.

EstablishedLow lock-in

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Pricing

Free tier

Usage-based

Adoption

→Stable

License

Proprietary

Data freshness

Unverified

Overview

What is Knock?

Knock is a notifications-as-a-service platform to design, route, and send cross-channel notifications (email, SMS, push, in-app) with preferences and batching.

Key differentiator

“Notifications infrastructure orchestrating every channel from one API.”

Capability profile

Capability Radar

Honest assessment

Strengths & Weaknesses

↑ Strengths

Cross-channel orchestrationhigh

Email, SMS, push, and in-app from one API

Preferences and batchingmedium

User preference management and digest batching

Good developer experiencemedium

Clean API and templating

↓ Weaknesses

Pricing steps up for scalemedium

Paid tier starts relatively high

Another service to integratelow

Adds a dependency vs rolling your own

Fit analysis

Who is it for?

✓ Best for

Multi-channel product notifications

One API across email/push/SMS/in-app

Notification preferences/digests

Built-in preference and batching logic

Cost structure

Pricing

Free Tier

Available

Free up to 10,000 notifications/month

Starts at

$250/mo

Model

Usage-based

Enterprise

Available

Performance benchmarks

How Fast Is It?

Ecosystem

Relationships

Alternatives

Novu

Next step

Get Started with Knock

Step-by-step setup guide with code examples and common gotchas.

View Setup Guide →