Email template checker

Validate your HTML email for size, image-to-text balance, alt text, links and spam triggers across email clients.

Free · No signup · Runs in your browser

Template / inputhtmlfig.

Paste your HTML email

Template / reportchecksfig.

96/ 100

Excellent

Issues

Passing

About templates

Render everywhere, filter nowhere

Gmail clips emails past ~102KB, hiding your CTA below a 'view entire message' link.

Image-heavy, text-light emails look like spam. Keep real, readable text in the body.

Many clients strip <style> blocks. Inline styles render far more reliably.

FAQ4 entries

Still curious? Our team responds in under an hour.

Total size, image count and missing alt text, image-to-text balance, link count, an unsubscribe link, inline vs. block CSS, and spam trigger words.

Gmail clips messages over ~102KB, which can hide your call to action and trigger 'view entire message' — hurting engagement.

Outlook and several webmail clients strip <style> blocks. Inlining styles on each element keeps your design intact.

Yes. When images are blocked (the default in many clients), alt text keeps your message readable and improves accessibility.

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PLATE · CTAstart nowfig.

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