SendLint

SendLint is an autonomous QA agent that runs the full QA cycle for email campaigns against each client's own standards.

Every pass runs 100+ checks: copy verified line-by-line against the approved copy deck (English and French), the built email compared block-by-block to the approved creative (PDF or XD), links crawled to their real destination, WCAG 2.1 AA accessibility, real Chromium rendering with Outlook risk flags, spam scoring, and brand voice review.

Findings track round over round until the build is clean, and sign-off mints a verifiable certificate binding the approved emails to their exact bytes, with a public verify page and an API gate that blocks the send if anything changed after approval.

Free demo available without an account.