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Gmail has a feature where it clips emails exceeding 102KB in message size and hides the full content behind a "View entire message" link. This can cause issues with email providers's open tracking.


To prevent Gmail from clipping your emails and ensure proper tracking, keeping the message size below 102KB is essential. The email message comprises various elements, including text, URLs, tracking codes, HTML for styling, etc. Each character in the code is approximately 1 to 2 bytes, contributing to the overall message size.


When Gmail clips an email, it also clips the tracking code responsible for open tracking. To avoid this, follow these steps:


Change the subject line of test emails


Gmail often threads emails with the same subject line, which can lead to larger messages. To prevent clipping during testing, modify the subject line or delete previous test emails in your inbox before sending a new one.


Remove extra code from copy-pasting

When pasting content from external sources, hidden formatting code may be added to your campaign's underlying code. Use the "Paste as plain-text" or "Paste from Rich Text Editor" options to avoid this.


Cut unnecessary content

If the above steps don't help, consider removing unnecessary content to reduce the message size.


1. Before making any changes, create a replicated copy of your campaign to preserve the original content. You can use Inbox Preview to test whether Gmail still clips your message. You can also determine the email size by sending it to a test address, viewing the source code, and checking the file size.


2. Note that resizing large images within the email won't directly affect the message size. The message size is based on the code's total bytes, but removing unnecessary images will reduce the overall size.


3. If cutting content is not an option, you can use "Read More" links to direct recipients to the full email content explicitly, ensuring proper tracking of opens.


How you can reate and insert a "Read More" links can depend on the email platform you use.