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Customer engagement infrastructure
for product-led growth.
Send your product, marketing, and transactional messaging with Knock.
Activate your data, ship cross-channel messaging, and accelerate growth.
Ship messaging without limits.
Developer-first tooling to build any messaging experience you want, without compromising on design, performance, or user experience.
Ship messaging without limits.
Developer-first tooling to build any messaging experience you want, without compromising on design, performance, or user experience.
Send messages across email, SMS, push, chat, and in-app.
Build messaging journeys in our intuitive drag-and-drop editor.
Deliver messages when and where your users expect them.
Send messages across email, SMS, push, chat, and in-app.
Build messaging journeys in our intuitive drag-and-drop editor.
Deliver messages when and where your users expect them.
On-brand, error-free messaging. Global styles and layouts, reusable blocks, live previews.
User-first controls. Respect user time with preference centers and send windows.
On-brand, error-free messaging. Global styles and layouts, reusable blocks, live previews.
User-first controls. Respect user time with preference centers and send windows.
In-app messaging with your own components.
Ship paywalls, dialogs, and nudges powered by your components.
Enable non-engineers to edit copy and targeting in Knock.
Unify and activate your data.
Ingest real-time data from your product and warehouse so you can trigger relevant, timely messaging based on any user attribute, event, or action.
Unify and activate your data.
Ingest real-time data from your product and warehouse so you can trigger relevant, timely messaging based on any user attribute, event, or action.
Ingest data from warehouse, CDP, and reverse ETL sources.
Build dynamic segments using attributes, events, and relations.
Trigger workflows from API calls, usage events, or segment changes.
![[object Object]](/_next/image?url=%2Fassets%2Fhome%2Ffeatures%2Ftrigger-workflows-desktop.png&w=3840&q=75)
![[object Object]](/_next/image?url=%2Fassets%2Fhome%2Ffeatures%2Ftrigger-workflows-tablet.png&w=3840&q=75)
![[object Object]](/_next/image?url=%2Fassets%2Fhome%2Ffeatures%2Ftrigger-workflows-mobile.png&w=3840&q=75)
Ingest data from warehouse, CDP, and reverse ETL sources.
Build dynamic segments using attributes, events, and relations.
Trigger workflows from API calls, usage events, or segment changes.
Model your data. Sync custom objects for audiences and personalized templates.
Personalize every message. Tailor messaging with user attributes and conditional logic.
Model your data. Sync custom objects for audiences and personalized templates.
Personalize every message. Tailor messaging with user attributes and conditional logic.
Built by developers,
for developers and AI agents.
The only customer engagement platform you can work with entirely from Cursor or Claude Code.
Bring Knock to your development workflow with environments, version control, and the Knock CLI.
Built by developers,
for developers and AI agents.
The only customer engagement platform you can work with entirely from Cursor or Claude Code.
Bring Knock to your development workflow with environments, version control, and the Knock CLI.
Knock CLI + your AI IDE. Bring all of Knock into your AI code editor with a single command.
CI/CD integration. Validate work before you deploy to production.
Knock CLI + your AI IDE. Bring all of Knock into your AI code editor with a single command.
CI/CD integration. Validate work before you deploy to production.
Built-in observability. Debug notifications with ease. Stream logs to external tooling.
Version control. Make changes without impacting production. Rollback with a click.
Built-in observability. Debug notifications with ease. Stream logs to external tooling.
Version control. Make changes without impacting production. Rollback with a click.
Messaging
infrastructure
you can trust.
99.99% uptime
We take being a downstream provider seriously.
Scaled delivery
Knock delivers hundreds of millions of messages per month.
HIPAA
SOC2
GDPR
CCPA
Trusted in production at
"Easy access for our non-technical team"
The level of visibility Knock provides into our notification system was a game-changer. Our customer service team can now easily access the entire history of a notification, from the initial template to the final delivered message.
Troy Blakely
Engineering lead • Discogs
"Notifications at scale"
Notification infrastructure is the most essential part of any product that I'd never dare build myself from scratch or operate at scale. Knock's APIs allow me to focus on my front-end experience, while all the complexity is abstracted away.
Guillermo Rauch
Founder & CEO • Vercel
"Fantastic product, shipped in-app notifications in record time"
We unblocked our marketing and education teams to start pushing in-app notifications in a couple days instead of a month or more. Install the React SDK, customize the CSS, and you're good to go.
Dane Williams
Engineering • Clay
"What used to take weeks now takes minutes"
Thanks to Knock's core functionality, our teams are able to easily build complex notification flows (batching, delays, multi-channel notifications, etc). The Knock dashboard is a powerful tool for visualizing notification templates and debugging.
Chamila Amithirigala
Staff software engineer • Amplitude
"We collaborate faster with product and marketing"
We wanted to increase our agility and be able to say "yes" more often to product and marketing teams. Knock was exactly what we were looking for. And now we're not wasting our time figuring out infra. We are just able to focus on driving adoption of new features.
Utkarsh Sengar
VP of Engineering • Webflow
"It's been a great tool and a great team"
Its comprehensive API and clear documentation allowed us to get a proof of concept running within days. The multi-channel support aligned perfectly with our vision for future notification capabilities.
Charlie Crisp
Software Engineer • Causal
"Knock let us save on costs and focus on opportunities"
I like how transparent the interface is when you send messages through. You can typically see a failure in a workflow execution right from the UI. That makes it really easy to diagnose when something's wrong.
Brian Lee
VP of Engineering • Nellis Auction
"Easy access for our non-technical team"
The level of visibility Knock provides into our notification system was a game-changer. Our customer service team can now easily access the entire history of a notification, from the initial template to the final delivered message.
Troy Blakely
Engineering lead • Discogs
"Notifications at scale"
Notification infrastructure is the most essential part of any product that I'd never dare build myself from scratch or operate at scale. Knock's APIs allow me to focus on my front-end experience, while all the complexity is abstracted away.
Guillermo Rauch
Founder & CEO • Vercel