K

Knock

Scalable notification infrastructure as a service

Overview

Knock provides a scalable notification infrastructure as a service that helps businesses engage users across channels through a unified API. Developers access API, SDKs in major languages, a CLI, and pre-built real-time in-app components, so they can build and manage notifications while Knock handles delivery. It differentiates itself with a developer-first approach, broad language support, real-time components, and enterprise-grade security and compliance (SOC2 Type 2, GDPR/HIPAA). The goal is to offer a reliable, secure platform that lets teams focus on their work while Knock manages the notification system.

Work here?Claim your company

About Knock

Simplify's Rating
Why Knock is rated
B-
Rated B on Competitive Edge
Rated B on Growth Potential
Rated C on Differentiation

Industries

Enterprise SoftwareCybersecurity

Company Size

11-50

Company Stage

Series A

Total Funding

$18M

Headquarters

New York City, New York

Founded

2021

Get referred to Knock

See people who can refer or advise you

Simplify Jobs

Simplify's take

What believers are saying

  • October 2026 Goals ties messaging to events, audience membership, and outcomes.
  • July 2026 Analytics in the Knock agent gives every team instant performance answers.
  • March 2026 public-beta agent builds workflows, emails, and segments from natural language.

What critics are saying

  • Courier and SuprSend undercut Knock on pricing, simplicity, and G2 comparisons in November 2026.
  • Goals attribution misreads causality, so teams blame Knock for revenue gaps.
  • Twilio, OneSignal, and AI-native rivals commoditize messaging infrastructure, shrinking Knock into a feature.

What makes Knock unique

  • Knock unifies developer APIs, workflows, guides, and analytics in one notification stack.
  • March-October 2026 launches added agentic editing, goals, and cross-workflow orchestration.
  • Guides toolbar and input schemas deepen in-product debugging and reusable workflow building.

Help us improve and share your feedback! Did you find this helpful?

Funding

Total Funding

$18M

Meets

Industry Average

Funded Over

2 Rounds

Notable Investors:
Series A funding typically happens when a startup has a product and some customers, and now needs funding to scale. This money is usually used to grow the team, expand marketing, and improve the product. Venture capital firms are frequently the main investors here.
Series A Funding Comparison
Below Average

Industry standards

$15M
$8.2M
$12M
$15M
$30M

Benefits

  • Remote Work Options
  • Wellness Program
  • Mental Health Support
  • Stock Options
  • 401(k) Retirement Plan
  • 401(k) Company Match
  • Conference Attendance Budget
  • Professional Development Budget
  • Phone/Internet Stipend
  • Home Office Stipend
  • Family Planning Benefits
  • Fertility Treatment Support

Growth & Insights and Company News

6 month growth

0%

1 year growth

-4%

2 year growth

0%
MoneyMakers
Oct 31st, 2026
From delivery to decisions.

From delivery to decisions. Knock is also extending the work customers can do around those messages. Its agents can build or suggest changes to messaging journeys; proposed changes sit on branches for a person to review and publish. In October 2026, Knock introduced Goals, which lets customers associate workflows, broadcasts and guides with defined user events or audience membership. Knock says its agent can use those criteria to assess messaging and suggest changes. A goal completion can be attributed to a messaging resource, but that association alone does not establish that the message caused the action. Why Knock is worth watching. Clipboard's account shows how Knock can move from engineering notifications to campaigns and in-app guides used by other teams. If those teams adopt its newer Goals tools, Knock could become useful not only for delivering messages but also for deciding which ones to send.

Knock
May 14th, 2026
Reusable request input schemas.

Reusable request input schemas. Last updated: 14 May 2026 Summarize: Today Knock Labs, Inc. is launching input schemas for reusable requests. Engineering teams can now define the exact data a reusable request expects, including required fields and input structure. Before this release, reusable requests provided a template, but teams still needed to know which variable names were expected and which fields were required. With input schemas, teams that add a reusable step to a workflow can see the required payload and map the right workflow data into it. Define reusable request inputs. With input schemas, engineering teams can define that required structure once: When someone adds that reusable request into a workflow, Knock shows them exactly what data to pass through. This makes reusable steps more flexible and helps teams standardize workflow logic without rebuilding the same request again and again. Map workflow data with less guesswork. To start using input schemas, open a reusable request and define the inputs it should expect. Add each field, choose its type, and mark any required fields so other teams know what data the request needs before they use it in a workflow. Those mapped inputs are available as parameters in the reusable request template. Reference them in the request URL, headers, or body to keep the request configuration reusable while each workflow passes in its own values. Once the schema is defined, add the reusable request to a workflow. Knock shows the required inputs in the fetch step, so the person building the workflow can see what data they need to provide. Get started. Input schemas for reusable requests are available today for all Knock customers. Learn more in its documentation.

Knock
Apr 14th, 2026
Guides toolbar.

Guides toolbar. Last updated: 14 Apr 2026 Summarize: Today Knock Labs, Inc. is introducing the guides toolbar, a floating debug panel you can open in your application to gain real-time visibility into your guides. What it solves. Building in-app messages shouldn't require guessing why they do or don't appear for a given user. The toolbar closes the gap between configuring an in-app message and confirming it works. Whether you're launching a new onboarding tour, a feature announcement, or a contextual nudge, you can validate the full experience before it reaches a single end user. How it works. The guides toolbar allows you to: * See what your users see. Toggle between all guides, active guides, and eligible guides to understand how your targeting rules play out in context. No more guessing whether a guide fired or why it didn't. * Test in your real product environment. Force any guide to display on the current page so you can preview it exactly as your users will experience it within your actual UI, not a simulation. * Inspect targeting in real time. View the parameters being evaluated for the current user and page so you can diagnose issues and fine-tune your audience rules with confidence. Testing best practices. Before launching your guides to users, always test them thoroughly to ensure they work as expected. Focus on these key areas: * Page targeting. Verify your guides appear on the correct pages by testing different URLs and path patterns in your activation rules. * User targeting. Confirm your targeting conditions work correctly by testing with users who should and shouldn't see the guide based on your eligibility criteria. * Engagement tracking events. Interact with your guides and verify that engagement status updates appear as expected in the dashboard (seen, interacted, archived). * User interactions. Click all links, buttons, and interactive elements to ensure they work as expected and navigate to the correct destinations. Getting started. The guides toolbar is available today for all Knock customers. For more information, read the documentation.

Knock
Apr 7th, 2026
Trigger workflow function.

Trigger workflow function. Last updated: 07 Apr 2026 Summarize: Today Knock Labs, Inc. is introducing the trigger workflow function, enabling you to trigger a different workflow from inside a workflow. This function gives teams a way to build modular customer journeys and launch more sophisticated messaging campaigns. Instead of rebuilding the same logic in multiple places, you can create reusable workflow building blocks and trigger them whenever they are needed. That means faster experimentation, easier maintenance, and more consistent customer experiences as your messaging strategy grows. The trigger workflow step functions similarly to a standard workflow trigger, executing a specified workflow with a specified payload. The payload is constructed based on the configuration settings defined in the step. The trigger workflow function is available today for all Knock customers. Learn more about it in its documentation.

Knock
Mar 26th, 2026
Changelog.

Changelog. Knock agent. Last updated: 26 Mar 2026 Summarize: Today Knock Labs, Inc. is introducing the Knock agent, a new way to build, edit, and ship messaging with AI. Built directly into the dashboard, the Knock agent has full context of your Knock account and assists with everything from answering questions to executing day-to-day tasks. How it works. The agent is designed to work how you work. With every prompt, it references your existing setup to ensure outputs match your branding and writing style, make sense in the context of messaging, and leverage existing templates and components. Create and manage resources. The Knock agent can be started from anywhere in the dashboard to create and manage any Knock resources, such as workflows, broadcasts, guides, and more. Generate beautiful emails. Gone are the days of building emails from scratch. Just describe what you want, upload a screenshot of an email you like, or send it a URL to pull content from. The agent builds a client-safe email using your layout and branding. Build audience segments. You can also build user segments from scratch using the Knock agent. Describe the users you want to target, and the agent will pull together the right filters to create a dynamic audience, ready to use. Get started. The Knock agent is now available in public beta for all teams. Agent use is included on all Knock plans at no additional cost during the beta period as Knock Labs, Inc. refine the experience and expand capabilities.

Recently Posted Jobs

Sign up to get curated job recommendations

Knock is Hiring for 2 Jobs on Simplify!

Find jobs on Simplify and start your career today

Don't see your dream role? Check out thousands of other roles on Simplify.Browse all jobs