SendLintCertificate
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SendLint Approved

Verify a certificate

Every approved SendLint round mints a certificate that records the exact HTML of each approved email. Enter the certificate id to see what was approved, then paste the final email HTML to confirm nothing changed after sign-off.

What a certificate proves

  • The round passed the client's QA policy when it was approved.
  • The approved HTML of each email is recorded as a SHA-256 fingerprint.
  • Any later edit, even a tracking pixel or a single character, no longer matches. The check runs in your browser; nothing is uploaded.

See an example: SL-2026-9CQK-GE3P-EMB4 (Harbourline, a sample campaign).