Private beta
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Personalized introductions to professors, researchers, and hiring contacts. Each one researched and drafted for you, then read and approved by you before it sends from your own Gmail.
Hi Professor Okafor,
I read your CHI ’26 paper on ambient notification design and replicated study 2 for my HCI course. My results matched yours within a few points. Your lab’s work on calm computing is why I’m applying to PhD programs this fall.
Would you have 15 minutes in the next few weeks?
Poke around someone else's campaign
Three real runs from people already using Knock. Everything here already happened, so click whatever you want, nothing sends. Every user in the list got their own email and you can read all of them.
Pick a campaign first.
How Knock works
Tell us who you want to reach
Pick your audience: professors, investors, recruiters. Knock discovers real contacts with verified email addresses.
AI drafts a unique email for each person
Every draft is personalized to the contact's actual work: their papers, posts, and projects. Never the same email twice.
Review, then send from your own Gmail
You approve or edit each draft, and emails go out from your Gmail with safe sending limits, so replies land in your inbox.
Your next reply is one knock away
Join the private beta and send your first personalized campaign today.

