Email clipping is one of those silent revenue leaks that almost nobody talks about and almost everybody is bleeding from. The 102kb limit is real, it is enforced by Gmail and other major providers, and once you cross it, the consequences are immediate and ugly.
What actually happens.
When an email gets clipped, three things happen at once.
- The mailbox hides most of the body. The reader sees a fragment and a small expand link they probably will not tap.
- Your bounce rate effectively increases, because the click through opportunity has been pushed behind a click most subscribers will not make.
- Your tracking link is often lost or broken in the clipped section, which makes the email look like it underperformed and quietly increases your spam folder probability over time.
Why it happens.
Emails get clipped when the size of the message crosses 102kb. The causes are predictable and easy to spot once you know what to look for.
- Too many GIFs, images, or embedded videos in a single send.
- Repetitive header or footer code that bloats every email past the limit.
- Long emails that pack the body with hidden CSS, inline styles, and table layouts.
- Pasted HTML from external editors that drops invisible code into your template.
It is astonishing how often a single forgotten formatting habit can cost a brand a meaningful slice of monthly email revenue.
How to fix it.
Avoiding clipping is not hard once you treat it as part of your QA process.
- Clean up any pasted HTML before scheduling the send.
- Limit graphics to one or two carefully chosen images per email.
- Use unique subject lines across flows and campaigns to keep template variants from auto stacking.
- Check the rendered email size in your ESP before every send. Most platforms surface it if you look.
Stay under 102kb. Always.
Treat the size cap the way you treat the unsubscribe footer. Non negotiable. Once it is part of your QA, you stop bleeding revenue to a problem most brands do not even know they have.
Most agencies will never look at this. Most in house teams have never been told to. Solve it once and you solve it forever.
The clipped email quick reference.
- Gmail and other major providers clip emails over 102kb. Stay under the line.
- When emails get clipped, your CTA, tracking link, and unsubscribe footer disappear from view.
- The main causes are too many graphics, repetitive code, and pasted HTML from external editors.
- Clean up HTML, limit graphics to one or two per send, and use unique subject lines across flows.
- Make file size a QA check before every send the way unsubscribe footer is.