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Email Size Checker

Check your email HTML size, image count, and Gmail clipping risk. Gmail clips emails over 102 KB, hiding your footer, CTA, and unsubscribe link.

Email Size Checker

Check your email HTML size, image count, and Gmail clipping risk

Paste the full HTML source of your email. Your HTML is analyzed locally and never sent to any server.

Why email size matters

  • Gmail clips emails over 102 KB and shows "[Message clipped] View entire message" with a link
  • Clipped emails hide your footer, unsubscribe link, and call-to-action buttons
  • Large emails load slower on mobile, increasing the chance readers abandon your message
  • Aim for under 50 KB for best performance across all email clients

About this tool

Gmail clips emails larger than 102 KB, cutting off the bottom of your message and replacing it with a "[Message clipped]" link. This means your call-to-action, footer, and even your unsubscribe link can disappear. Use this tool to check your email's HTML size before sending. Keep emails under 50 KB for best results. If your email is too large, reduce inline CSS, minimize table nesting, and compress images. For a comprehensive deliverability check, run your domain through our deliverability score checker and verify your SPF records, DKIM setup, and DMARC policy.

Frequently Asked Questions

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