Signet7 Live check Register

How it sits

Keep writing in the mail you already use.

This is not a new mail app. Your people keep writing where they already write. Signet7 is the look before a wire, a pay, or an account change goes through.

Check a message Engineer spec

Beside the mail you have Not a new inbox DNS key lookup is live; managed directory is not

What this is not

Not another product to live inside.

Not a mailbox

Outlook stays Outlook. Apple Mail stays Apple Mail.

Not a spam filter

We do not rank junk. We cryptographically seal outgoing mail and check that seal before someone acts.

Not a spy on every inbox

Named work emails. Recipients open the live check when it matters.

Do you need a download?

Every current route. Who installs, who does not.

Recipients never install. A thousand people are covered because they can open the live check. Signet7 desktop is still named work emails on office computers. Checkout is not live. Nothing here is a store listing unless it says so.

Outlook sideload — optional files

Save manifest.xml. Add from File. Not AppSource. Recipients who never sideload still use the live check.

Signet7 desktop

One Windows, Mac, or Linux PC. Unsigned preview. Incoming checks and optional seal (outgoing, 127.0.0.1 port 2525) both live in this app. Recipients should not download. Download · Outbound seal.

Browser extension — lab

Unpacked sideload in the client tree. Not Chrome Web Store. Not the product.

Gmail add-on — lab

Placeholder host. Not the product. Not a Workspace Marketplace listing.

Android check — lab

Sideload debug APK that opens the live check. Not Play Store.

MCP / action gate — operator

stdio signet7-mcp. Caller enforces. Not a Claude Directory listing. Recipients do not install it.

App stores — not a current route

No Signet7 in Chrome Web Store, Play Store, App Store, or AppSource. Do not send people there.