1.All the channels, for now and later

Start with email and in-app channels. Instantly add push, SMS, and Slack when you need them.

2.Pay-as-you-go

Predictable pricing that scales with you. No upfront fees or infrastructure set up required.

3.Built for scale and resiliency

Power high volume notifications without spending valuable engineering time on messaging infrastructure.

4.Versioning

Commit, reset, and audit your changes. Knock uses the same versioning workflow you do.

5.Environments

Test changes in a development environment before promoting them to production.

6.Observability

Look under the hood from API request to workflow run to downstream messages to understand how your users are receiving messages.

7.Branding

Customize colors, themes, and layouts to present a consistent brand across all of your notification surface areas.

8.Tenancy

Leverage our built-in tenancy model to support per-tenant feeds and offer custom branding to your customers.

9.Testing

Easily test complex notification workflows across multiple channels, without needing to manually reproduce complex interactions in your product.