WHY GMAIL IS CLIPPING YOUR EMAILS — AND WHAT TO DO ABOUT IT

Summary from the TLDR Marketing newsletter

Gmail automatically hides any part of an email that exceeds 102 KB, showing a "Message clipped" link that most readers never click. This quietly damages open rates because the tracking pixel typically sits at the bottom of the email and gets cut along with the hidden content. Common culprits include uncompressed images, heavy inline CSS, and long newsletters with multiple formatted sections.