Knock

Knock (knock.app): 12 changes recorded in its website history since April 2021. Homepage last checked 6 November 2026.

Recorded changes

Newest observations first. Each interval bounds when the website changed; it is not an exact event date.

HeadlineBetween 12 July 2026 and 6 November 2026
BeforeAgent-led customer engagement for compounding growth.
AfterAgentic customer engagement to grow faster
Observed on the company’s website; business claims are not independently verified.
earlier archived page current websiteHistorical capture not publicly availableLink to observation
HiringBetween 13 January 2026 and 12 July 2026
Opened a job board on Ashby.
Observed on the company’s website; business claims are not independently verified.
earlier archived page later archived page Link to observation
Go-to-marketBetween 14 July 2024 and 3 July 2025
Dropped its free sign-up; visitors are now asked to book a demo.
Observed on the company’s website; business claims are not independently verified.
earlier archived page later archived page Link to observation
HeadlineBetween 14 July 2024 and 3 July 2025
BeforeThe most powerful notification system you'll never build.
AfterKnock is infrastructure for sending product and customer messaging.
Observed on the company’s website; business claims are not independently verified.
earlier archived page later archived page Link to observation
HiringBetween 29 September 2023 and 3 January 2024
Opened a job board on Ashby.
Observed on the company’s website; business claims are not independently verified.
earlier archived page later archived page Link to observation
ComplianceBetween 6 January 2023 and 29 September 2023
Now states HIPAA compliance on its homepage.
Observed on the company’s website; business claims are not independently verified.
earlier archived page later archived page Link to observation
ComplianceBetween 16 January 2022 and 6 January 2023
Now states SOC 2 compliance on its homepage.
Observed on the company’s website; business claims are not independently verified.
earlier archived page later archived page Link to observation
Go-to-marketBetween 16 January 2022 and 6 January 2023
Added a free sign-up or free trial.
Observed on the company’s website; business claims are not independently verified.
earlier archived page later archived page Link to observation
Go-to-marketBetween 16 January 2022 and 6 January 2023
Closed its waitlist and opened sign-up.
Observed on the company’s website; business claims are not independently verified.
earlier archived page later archived page Link to observation
HeadlineBetween 16 January 2022 and 6 January 2023
BeforeNotifications infrastructure for developers
AfterThe most powerful notification system you'll never build.
Observed on the company’s website; business claims are not independently verified.
earlier archived page later archived page Link to observation
PricingBetween 16 September 2021 and 16 January 2022
Added a pricing page.
Observed on the company’s website; business claims are not independently verified.
earlier archived page later archived page Link to observation
HeadlineBetween 16 September 2021 and 16 January 2022
BeforeThe easiest way to send product notifications
AfterNotifications infrastructure for developers
Observed on the company’s website; business claims are not independently verified.
earlier archived page later archived page Link to observation

First recorded website

Observed 6 April 2021

Our earliest capture with readable facts. This is our first observation, not when the company introduced these things. These website claims are not independently verified.

How it described itself

The easiest way to send product notifications

Knock is a hosted API for turning user activity into product notifications.

archived page Link to first observation

All facts above belong to this capture. Unlisted fields mean we have no readable observation, not that they were absent.

How it describes itself

Similar headlines are grouped together. The quote shown is from the last capture in each group, not necessarily the exact wording throughout that period.

Seen November 2026 · 1 capture · latest observed messagingAgentic customer engagement to grow faster
Knock is agentic customer engagement infrastructure to grow faster. Ship cross-channel lifecycle and transactional messaging from your favorite agent.
This wording observed 6 November 2026.
current websiteHistorical capture not publicly available
July 2025 – July 2026 · 3 capturesAgent-led customer engagement for compounding growth.
Knock is customer engagement infrastructure for your product, marketing, and transactional messaging. Activate your data, ship cross-channel messaging, and accelerate growth.
This wording observed 12 July 2026.
archived page
Inspect 3 captures in this group
- 3 July 2025 · Knock is infrastructure for sending product and customer messaging. archived page
- 13 January 2026 · Customer engagement infrastructure for product-led growth. archived page
- 12 July 2026 · Agent-led customer engagement for compounding growth. archived page
January 2023 – July 2024 · 4 capturesThe most powerful notification system you'll never build.
Knock is flexible, reliable notifications infrastructure that's built to scale with you. Use our APIs to engage your users, power cross-channel workflows, and manage notification preferences.
This wording observed 14 July 2024.
archived page
Inspect 4 captures in this group
- 6 January 2023 · The most powerful notification system you'll never build. archived page
- 29 September 2023 · The most powerful notification system you'll never build. archived page
- 3 January 2024 · The most powerful notification system you'll never build. archived page
- 14 July 2024 · The most powerful notification system you'll never build. archived page
Seen January 2022 · 1 captureNotifications infrastructure for developers
Knock is flexible, reliable notifications infrastructure that's built to scale with you. Use our APIs to engage your users, power cross-channel workflows, and manage notification preferences.
This wording observed 16 January 2022.
archived page
April 2021 – September 2021 · 2 capturesThe easiest way to send product notifications
Knock is a hosted API for turning user activity into product notifications.
This wording observed 16 September 2021.
archived page
Inspect 2 captures in this group
- 6 April 2021 · The easiest way to send product notifications archived page
- 16 September 2021 · The easiest way to send product notifications archived page

Cite this record

StartupHistory, “Knock” company record, https://startuphistory.org/c/knock.app

Machine-readable: /c/knock.app.json. How changes are found: method.