Knock
Notifications infrastructure — orchestrate email, push, SMS, and in-app messages.
- Status
- Generally available
- Last checked
- Checked · Oct 12, 2026
- License
- Proprietary
- Pricing
- Free tier · from $250/mo
What it is
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.
Notifications infrastructure orchestrating every channel from one API.
When it fits — and when it doesn’t
A good fit for
Multi-channel product notifications
One API across email/push/SMS/in-app
Notification preferences/digests
Built-in preference and batching logic
Known weaknesses
Each one links to the public issue, changelog or docs page it came from, where we have one.
- 01
Pricing steps up for scale
Paid tier starts relatively high
- 02
Another service to integrate
Adds a dependency vs rolling your own
What it does well
Cross-channel orchestration
Email, SMS, push, and in-app from one API
Preferences and batching
User preference management and digest batching
Good developer experience
Clean API and templating
Pricing
- Free tier
- YesFree up to 10,000 notifications/month
- Paid from
- $250/mo
- Model
- Usage-based
- Enterprise plan
- Yes
Pricing not independently confirmed — check the vendor’s page.
Performance benchmarks
How Fast Is It?
Set up Knock
Setup steps, common gotchas and what to check after 30 days.
Get the badge
A small badge for Knock’s README or site: its name, “Tracked on AI Navigator”, and the availability status and check month from this page. It updates as the catalog does.
Markdown
[](https://navigateaitools.com/explorer/tool/knock)HTML
<a href="https://navigateaitools.com/explorer/tool/knock"><img src="https://navigateaitools.com/badge/knock.svg" alt="Knock — tracked on AI Navigator" height="58"></a>