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Officially verified details SendLint

Email QA software that checks the built email against the copy deck and the approved design: every line of copy, every link, every module. Developers get a variance log.

SendLint

SendLint Reviews and Details

This page is designed to help you find out whether SendLint is good and if it is the right choice for you.

Screenshots and images

  • Report Summary //
    2026-10-18
  • Creative vs. Email //
    2026-10-18
  • Copy vs. Deck //
    2026-10-18
  • Links vs. Deck //
    2026-10-18
  • Round Matrix //
    2026-10-18
  • Certification //
    2026-10-18
  • AI Code Revision //
    2026-10-19
  • AI Reviewer //
    2026-10-19
  • AI Brand Voice //
    2026-10-19

Features & Specs

  1. Copy vs deck

    Checks every line of copy in the email against the Word or PDF copy deck

  2. Design Comparison Tool

    Compares the email to the approved design module by module and flags spacing, cropping and missing modules

  3. Link Checker

    Checks each link against the deck and follows it to the final page it lands on

  4. Text in Images

    An AI Agent reads the words inside images and checks them against the deck too

  5. Any language

    Checks decks and emails in any language, including EN/FR side-by-side decks

  6. Accessibility

    Checks alt text, colour contrast, headings and link text

  7. Compliance

    Checks the unsubscribe link, footer, legal copy and spam triggers

  8. Variance log

    Lists every difference for your developers, ready to copy or download as .docx

  9. Review rounds

    Re-checks each new build and shows what's fixed and what's still open

  10. Sign-off certificate

    Issues a certificate when the email is approved, which anyone can verify

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Questions & Answers

As answered by people managing SendLint.
  1. What's the story behind SendLint?

    I'm an email QA analyst. Every campaign meant checking the email against a copy deck and a design by hand, line by line, link by link, across multiple versions and languages. It was slow, and small mistakes still got through. I built SendLint to do that whole job the way a QA analyst does it, with the deck as the source of truth and a report developers can act on.

  2. What makes SendLint unique?

    It checks the email against the copy deck and the approved design, not just how the email renders. SendLint reads the deck itself, whether it's a Word or PDF file, side-by-side EN/FR, or any other language, and matches every line of copy, every link and every module in the email to it. It also compares the email to the approved creative and flags visual drift, like a cropped image, a missing module or spacing that changed.

  3. Why should a person choose SendLint over its competitors?

    Tools like Litmus and Email on Acid show you how an email looks. SendLint tells you whether it's right: the copy matches the deck, the links go where the deck says, and the layout matches the design. It also gives you what QA work actually needs: a variance log for developers, review rounds that track what's been fixed, and a sign-off certificate when the email is approved.

  4. How would you describe the primary audience of SendLint?

    Email QA analysts, email developers and production leads at agencies and in-house marketing teams. Anyone who builds emails from a copy deck and a design, and has to prove the email matches both before it goes to the client.

  5. Which are the primary technologies used for building SendLint?

    Next.js, React, TypeScript, PostgreSQL, Vercel, Stripe, and AI vision and language models for reading decks and the words inside images.

Videos

Welcome to SendLint: email QA against your approved assets

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SendLint discussion

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Is SendLint good? This is an informative page that will help you find out. Moreover, you can review and discuss SendLint here. The primary details have been verified within the last quarter. So they could be considered up to date. If you think we are missing something, please use the means on this page to comment or suggest changes. All reviews and comments are highly encouranged and appreciated as they help everyone in the community to make an informed choice. Please always be kind and objective when evaluating a product and sharing your opinion.