Knock
ChatGPT plugin by Knock · Message users across channels
About Knock
Knock is a ChatGPT plugin by Knock in the Developer Tools category of the ChatGPT plugin directory. Its listing describes it as “Message users across channels”. It was created on Aug 25, 2026 and has been tracked in the directory since Oct 2, 2026.
Knock does not currently reach the top 10 for common Developer Tools searches in the directory, so most people find it by searching for its name.
On the directory's Developer Tools page it is listed at position 146 of 277.
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.From the plugin’s directory listing
Search positions
Knock is not in the results of any tracked search.
Listing check
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0 / 30Put a search term in the name Search rankThe name has none of the tracked search terms.Directory search ranks name matches first: 74% of top-3 results have the search term in the name. Searches for a brand name itself are not tracked.8 of 20 category leaders do this
Recent changes
No changes yet.
Knock: questions and answers
What does Knock do?
Message users across channels. 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.
Who makes Knock?
Knock is developed by Knock.
How do I add Knock to ChatGPT?
Open ChatGPT, go to Plugins, search for “Knock” and select Install plugin. You can also open its page in the directory directly.
Is Knock still available in ChatGPT?
Yes. Knock was listed in the ChatGPT plugin directory at the latest hourly check.