Question 1

Why does Gmail clip my email at 102KB?

Accepted Answer

Gmail automatically clips any HTML email whose raw source exceeds 102KB and shows a '[Message clipped] View entire message' link at the bottom. This cuts off your tracking pixel, breaks CTA buttons, and tanks deliverability metrics. The fix is to minify your HTML, remove unused CSS selectors, and compress your layout below 100KB.

Question 2

How does Vaporize fix Gmail clipping?

Accepted Answer

Vaporize runs a tree-shaking parser on your HTML email to strip unused CSS class selectors, remove HTML comments, compress whitespace, shorten class names, and minify inline styles — all while preserving your visual layout. The result is typically a 30–60% reduction in file size, safely bringing most emails under the 100KB threshold.

Question 3

Will minifying my email break its layout?

Accepted Answer

No. Vaporize only removes non-visual content: whitespace, comments, and unused CSS rules. It never changes inline style values, structural HTML tags, or content. You can preview your email after minification to verify the layout is identical before sending.

Question 4

What other email clients have payload size limits?

Accepted Answer

Gmail is the most strict at 102KB, but Yahoo Mail also degrades rendering performance for large emails. Outlook.com may time out loading very large templates. As a best practice, keeping email HTML under 100KB ensures maximum compatibility across all major clients.

Gmail Clipping Fixer