Emails that have a message size larger than 102 KB will clip in Gmail. You will see a ‘View entire message’ link where the clipping occurs, click it to access the full content of the email.
Unfortunately, there isn't a direct fix for emails clipping in Gmail. This is Gmail email client issue and is not an issue with your ContactMonkey template. Although there is no fix, try some of the workarounds and recommendations below to mitigate the issue:
Use short, snappy introductions that grab the attention of the reader on the cover page - you want to entice readers to engage with your content and click on calls to action or Read More Link Text. This will lead readers to your back page or intranet site, where the bulk of your content is.
Limit your email to one core message. Content creators often target a large audience through a single email - if Gmail is the majority share email client and you want to avoid clipping, keep your emails short and concise.
Add a “View in Browser” link at the top of your email. Gmail cannot control the Web version of an email allowing your readers view the entire email online.