Humanstamp

Effort used to mean something. A thoughtful cold email, thank-you note, or introduction was once a signal that someone had invested real time in reaching out. Today, with AI generating polished messages in seconds, that signal is gone — what once took personal investment can now feel like a ChatGPT prompt, a copy & paste, and a send.

So how do you stand out in someone's inbox when effort is invisible?

HumanStamp restores the value of this effort.

HumanStamp is a Chrome extension for Gmail and Outlook that watches how your email is written — not what it says. When you've personally typed the majority of a message, it lets you cryptographically sign it with a HumanStamp badge before sending.

For recipients of your email, that badge is a verifiable guarantee:

1. The message was majority human-typed
2. The content hasn't been altered since it was signed
3. The verification is backed by cryptography, not a company's word

Hover over any badge (with the extension installed) and see the proof yourself.

AI-generated communication is inevitable, and HumanStamp doesn't fight this. It simply makes human effort visible again — for the people who still think it matters.