Outlook

Sideload the add-in. Keep writing in Outlook.

Passive check. Unsigned mail stays quiet. A warning pops only when a seal is broken, replayed, or revoked. This pane is not a composer. Checkout is not live. Recipients who never sideload still use the live check.

Not AppSource Signet7 desktop on named work emails
  1. Save manifest.xml, then add it in Outlook.
  2. In Outlook, sideload that manifest. Not AppSource. Org-wide push is a Microsoft 365 admin task.
  3. Read mail as usual. Ordinary mail stays quiet.
  4. Anyone else: verify.signet7.io/email/verify. No account. No install.

Files on this host: taskpane.html · compose.html · manifest.xml. Handbook: docs.

Phone live-check drawing. Recipients never install.
Phone live check. Recipients never install.