Every stamped action carries a link to its receipt; for email, that is the footer line. The check runs entirely in the recipient's browser at verify.inklineverify.com — no account, no install, and it works even if Inkline disappears. Suspicious of links? Type the address yourself and paste the content in.
A valid receipt proves the enrolled key signed exactly this content, witnessed by our notary. It does not prove who composed the words. The verify page names the trust tier on every result. Email stamps and Touch ID approvals: hardware-attested. Apple's App Attest certified that the signing key was generated inside a genuine Secure Enclave by the signed Inkline app, and the notary refuses to co-sign without it. Passkey approvals: labeled "Verified with a passkey: the enrolled person approved exactly this content on their own device, witnessed by the notary. Not hardware-attested." Receipts issued before 17 September 2026 verify, with a note that they were issued before hardware attestation became part of every stamp.
For email, only text is signed: from, to, cc, subject, and the message body. Attachments are not covered — a receipt says nothing about a file, video, or image sent with the email. Links in the text are covered, but not what they point to. BCC is never part of the signed content — it would reveal hidden recipients. The Inkline footer line itself is ignored automatically when pasting, so verifying the message exactly as received just works.