Knock

Knock is the most powerful notification system you’ll never build. With Knock you can add a secure, reliable, and scalable notification system to your application in minutes.

Knock is built for developers. We provide a single API for all of your notifications code and observability tools so you can understand how your notifications are sent.

We built product notifications so you don’t have to.

If you don’t have a Knock account, you’ll be prompted to create one during the Vercel integration setup flow.

When you connect a Vercel project to an account in Knock, Knock will automatically set the KNOCK_API_KEY and KNOCK_PUBLIC_API_KEY environment variables on your Vercel project.

To learn how to use Knock to send notifications to your users, read our quick start guide.