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Knock

Message users across channels

Category
Marketing
View in the ChatGPT registry
Integration details

Description

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.

Integration type
Plugin
Verification status
Not applicable
Platform
ChatGPT
Category
Marketing

The broad Category that contains the Primary Subcategory.

Primary Subcategory
Email & SMS Lifecycle Marketing Automation

The Primary Subcategory used for this profile’s headline score.

Secondary Subcategories
None listed

Other Subcategories where the Integration is listed.

Brand
Knock
Access
Account required
First tracked
2026-09-03
Tool count
24
Geography
US

ChatGPT Plugin Discovery Score

ChatGPT Plugin discovery is coming soon

ChatGPT can surface a Plugin when it matches a user's request.Your Plugin Discovery Score measures how often yours appears.

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What discovery looks like

ChatGPT recommends Airtable when a user asks it to update a CRM.
ChatGPT surfaces Airtable because it matches the user's request.
Primary Subcategory
Listed in alphabetical order
Primary Subcategory
ActiveCampaignComing soonGet notified
AivieComing soonGet notified
AWeberComing soonGet notified
BizgoComing soonGet notified
BrevoComing soonGet notified
KnockComing soonGet notified
Recommended guideThe Complete Guide to ChatGPT Plugin DiscoverabilityFollow the practical steps agents use to find, shortlist, and choose your Plugin.Read guide
Tools

24 tools agents can invoke

Knock FAQ
How do I improve a ChatGPT Plugin's discoverability?

The levers are the listing surface agents actually read: names, descriptions, keywords, tool metadata, and registry health. Which lever matters depends on where discovery breaks, which is what continuous measurement shows.

What are Knock alternatives on ChatGPT?

As of 2026-09-12, Knock competes with ActiveCampaign, Aivie, AWeber, Bizgo, Brevo, Conversion, Customer.io, Flodesk, Intuit Mailchimp, Kanal, Klaviyo, L Message(エルメ), Life Analytics Mail, Loops, magnews, MailerLite, Mailrith, MailSenpai, Nitrosend - AI Native Email, Notifly, Omnisend, OneSignal, Resend, SAMWAD, Sent, Spoki, Systeme.io, Textmagic, VerticalResponse in ChatGPT Email & SMS Lifecycle Marketing Automation, ranked by public Discoverability Score.

Where is this profile measured?

This profile uses the geography attached to the latest public registry snapshot: US. Locale tags are intentionally omitted.