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Knock

ChatGPT plugin

Message users across channels

View in ChatGPT directory
Connection
Remote

hosted by the developer

Apps SDK app
Yes

ships an in-chat UI

Movement

Over the last 30 days of daily snapshots.

Rank by placement

#3515of 3,8809places down24h582places down7d
#2,837#3,023#3,209#3,395Aug 26Aug 31Sep 5Sep 10Sep 15Sep 20

Also on other marketplaces

Knock is agent-first customer engagement infrastructure for your product, marketing, and transactional messaging. One platform to manage all your messaging across email, SMS, push, chat, and in-app.

Inspect workflows and manage notifications, directly in ChatGPT and Codex.

Example prompts

  • “Create a workflow called onboarding-flow that sends a welcome email when a user signs up, then a follow-up email two days later.”
  • “Help set up an in-app notification feed for my website and app.”
  • “What percentage of users clicked the main CTA on the first email in our "welcome" broadcast?”

Skills

  • knock-cli

    Guidelines for working with the Knock CLI to manage workflows, templates, and other notification resources in a Knock project.

  • knock-in-app-ui

    Guidance for implementing Knock in-app UI in a web app, with a focus on setting up, rendering, and debugging Knock guides in React.

  • knock-lifecycle-opportunities

    Scan a product codebase for activation, engagement, and retention moments and recommend lifecycle messaging opportunities. Use when finding onboarding, churn, trial, or habit-forming notification candidates without creating Knock resources.

  • knock-migrate-to-knock

    Investigate existing messaging infrastructure in a codebase and recommend how it maps to Knock. Use when migrating from Braze, Courier, Customer.io, Iterable, SendGrid, or custom notification code, or when planning a move to Knock.

  • knock-notification-best-practices

    Comprehensive guidelines for designing, writing, and implementing effective notification systems across email, push, SMS, in-app, and chat channels.

  • knock-product-messaging-strategy

    Design a cross-channel product messaging system that drives activation, engagement, and retention while controlling fatigue. Use when planning lifecycle messaging, auditing notification strategy, prioritizing workflows, or turning product moments into Knock workflows, guides, preferences, and measurement.

  • knock-setup

    Connect Knock to your coding agent, discover and build notification workflows, and recommend how to trigger them from your application.

Categories
Made by
Knock · Website
Version
1.1.0
Created At
August 25, 2026
More info