Back to free tools

Client-side tool

Email preview text checker.

Check whether your preview text supports the subject line, fits a practical inbox range, and avoids repeating the same message.

Preview text check

    TL;DR

    Preview text should not repeat the subject. Use it to clarify the benefit, add proof, reduce uncertainty, or create a stronger reason to open.

    How should preview text support the subject line?

    Think of the subject line as the hook and preview text as the supporting reason. Together they should make the email promise clear without overexplaining.

    What should you avoid?

    • Repeating the exact subject line.
    • Letting template filler text appear.
    • Hiding the main benefit after a long intro.

    FAQ: preview text

    What is email preview text?

    Preview text is the short snippet that appears next to or below the subject line in many inboxes. It should add context and strengthen the reason to open.

    How long should preview text be?

    A practical starting range is 40 to 90 characters. Inbox display varies, so put the most important context early.

    Should preview text repeat the subject line?

    Usually no. Preview text should support the subject line with additional context, proof, curiosity, or the next benefit.