Why is Gmail not clipping my emails over 102kb?

Summary

Gmail's email clipping, which occurs when messages exceed 102KB, is primarily governed by the size of the HTML code, excluding linked images and external CSS files. While the HTML size is the primary factor, sender reputation and user engagement also influence clipping behavior; trusted senders with high engagement might bypass the limit. All HTML elements, including text, tags, inline CSS, comments, and tracking pixels, contribute to the HTML size. Rendering can vary due to user settings, ESP configurations, and IP addresses. To prevent clipping, optimize HTML by minifying code, avoiding nested tables, and using CSS for layout. Prioritize important content before the 102KB threshold, test emails in Gmail, and maintain a positive sender reputation.

Key findings

  • HTML Size Matters Most: The 102KB clipping limit applies specifically to the HTML code size of the email.
  • Sender Reputation Influences: Gmail trusts reputable senders, potentially allowing emails to exceed the 102KB limit without clipping.
  • All HTML Elements Count: Text, HTML tags, inline CSS, comments, and tracking pixels all contribute to the overall HTML size.
  • Outlook Differs: Outlook's reported email size includes images, while Gmail focuses solely on the HTML.
  • User/ESP Settings Matter: Individual user settings, ESP configurations, and IP addresses can affect how emails are rendered, potentially affecting clipping.

Key considerations

  • Optimize HTML Code: Minimize and streamline HTML code by removing unnecessary elements, minifying CSS, and avoiding nested tables.
  • Prioritize Key Content: Ensure the most important information appears before the 102KB threshold.
  • Test Emails Thoroughly: Test emails in various Gmail accounts and on different devices to identify clipping issues.
  • Maintain Sender Reputation: Focus on building and maintaining a positive sender reputation to improve deliverability and reduce clipping.
  • Use CSS for Layout: Use CSS for structuring and styling emails rather than relying on complex HTML tables.
  • Check HTML Size: Utilize tools like Litmus or Email on Acid to analyze and check the HTML size of your emails accurately.

What email marketers say
13Marketer opinions

Gmail's email clipping behavior, which occurs when messages exceed 102KB, is primarily determined by the size of the HTML code, not the total email size including images. However, sender reputation, user engagement, and email content also influence clipping. Emails from trusted senders with high engagement may not be clipped, even if over the size limit. To prevent clipping, focus on optimizing HTML by minifying CSS and HTML, removing unnecessary code, avoiding nested tables, and optimizing images. Testing emails in Gmail before sending to a large audience is crucial.

Key opinions

  • HTML Size Matters: Gmail's 102KB clipping limit refers to the HTML code size, not the total email size.
  • Sender Reputation: A strong sender reputation and high user engagement can reduce the likelihood of clipping, even with larger emails.
  • Outlook Displays Resolved Size: Outlook's reported email size includes downloaded images, unlike Gmail's HTML-only calculation.
  • Images Don't Count (Directly): Image sizes don't directly contribute to the HTML size limit, but optimizing images improves loading times and the user experience.

Key considerations

  • Optimize HTML: Minify CSS and HTML, remove unnecessary code, avoid nested tables, and optimize images to reduce HTML size.
  • Check HTML Size: Use tools like Litmus or Email on Acid to analyze the HTML size accurately.
  • Testing is Essential: Test emails in Gmail before sending to a large audience to identify and fix clipping issues.
  • Reputation Management: Maintain a good sender reputation and encourage user engagement to minimize clipping.
  • In-line CSS: Using inline CSS can bloat your HTML. Consider using a mix of embedded and inline CSS.
Marketer view

Marketer from Email Geeks confirms calculation only takes HTML into consideration. States no background on the reputation stuff.

December 2022 - Email Geeks
Marketer view

Email marketer from Reddit explains that sometimes the inclusion of tracking pixels or complex HTML tables can contribute to the overall size of the email. Simplifying the design and minimizing the use of tracking pixels can help prevent clipping.

January 2025 - Reddit
Marketer view

Email marketer from Email Marketing Forum shares that before sending an email to a large audience, always test the email in Gmail to see if it gets clipped. This will allow you to identify potential issues and make necessary adjustments before impacting your subscribers.

March 2023 - Email Marketing Forum
Marketer view

Email marketer from HubSpot explains testing in a real Gmail account is always the best way to ensure your emails render correctly and don't get clipped. Use different devices and email clients for thorough testing.

October 2022 - HubSpot
Marketer view

Marketer from Email Geeks says outlook displays resolved message size, i.e. including any downloaded images.

November 2024 - Email Geeks
Marketer view

Email marketer from SuperOffice explains try to avoid using too many nested tables in your design, as they can increase the HTML size and trigger clipping. Use CSS for layout when possible.

May 2022 - SuperOffice
Marketer view

Marketer from Email Geeks explains Gmail will clip if the HTML is greater than 102kb and if the sender reputation is shaky, but if the sender reputation is good it usually won’t.

February 2025 - Email Geeks
Marketer view

Email marketer from Mailjet explains that optimizing HTML code can reduce the size of the email and prevent clipping. Minifying CSS and HTML, removing unnecessary code, and using optimized images are some of the strategies you can use.

September 2023 - Mailjet
Marketer view

Email marketer from Email on Acid explains that to accurately determine if an email will be clipped, you need to check the HTML size of the email. They recommend using tools like Litmus or Email on Acid to analyze the HTML and identify areas for optimization.

February 2025 - Email on Acid
Marketer view

Email marketer from Neil Patel's Blog shares that Gmail's clipping behavior isn't solely based on size. Sender reputation and user engagement also play a role. Emails from trusted senders with high engagement rates may not be clipped, even if they exceed the 102 KB limit.

September 2022 - Neil Patel's Blog
Marketer view

Marketer from Email Geeks found that the filesize is completely accurate. It really is over 200kb, and couldn't determine why it isn’t clipping for the sender but it is clipping for him.

December 2023 - Email Geeks
Marketer view

Email marketer from Sendinblue explains that while images themselves don't count toward the 102KB HTML limit, large image sizes can still impact email loading times and user experience. Optimizing images for web use and using appropriate compression techniques can improve email performance.

October 2022 - Sendinblue
Marketer view

Email marketer from Stackoverflow user shares that using inline CSS instead of embedded CSS can sometimes increase the HTML size and lead to clipping. Consider using a combination of inline and embedded CSS to optimize the code.

November 2024 - Stackoverflow

What the experts say
3Expert opinions

Gmail's email clipping behavior, occurring when emails exceed 102KB, primarily depends on the HTML size, not the total size inclusive of images. A sender's reputation significantly influences clipping; reputable senders may bypass the limit. Individual user settings or Email Service Provider (ESP) configurations can also affect clipping behavior due to varying rendering conditions based on IP addresses and delivery paths.

Key opinions

  • HTML Size is Key: The 102KB limit applies specifically to the HTML size of the email.
  • Sender Reputation Matters: Gmail trusts reputable senders, potentially allowing them to exceed the clipping limit.
  • Rendering Can Vary: Individual user settings and ESP configurations can impact email rendering, including clipping.

Key considerations

  • Optimize HTML Code: Ensure your HTML code is as efficient as possible to stay within the 102KB limit.
  • Maintain a Good Reputation: Work to maintain a positive sender reputation to increase the chances of bypassing the clipping limit.
  • Consider User Settings: Be aware that users' settings and ESP configurations can impact how emails are rendered and whether they're clipped.
Expert view

Expert from SpamResource explains that Gmail's clipping behavior can be influenced by sender reputation. A sender with a strong reputation may have emails exceeding 102KB not clipped, while a sender with a poor reputation may experience clipping even for smaller emails. This is because Gmail trusts emails coming from reputable sources.

April 2022 - SpamResource
Expert view

Expert from Word to the Wise explains the reasons emails render differently are many. Your IP is one aspect that will impact the delivery path the email takes to the inbox. Also the user or ESP can be an aspect in what happens to an email. In terms of clipping it is likely a user may have settings on their side to enable or disable the clipping.

February 2024 - Word to the Wise
Expert view

Expert from Email Geeks clarifies that the 102kb rule for Gmail clipping only applies to the HTML size of the email.

August 2021 - Email Geeks

What the documentation says
4Technical articles

Gmail's clipping of emails over 102KB is based solely on the HTML code size, excluding linked images or external CSS. All HTML elements like text, tags, inline CSS, comments and tracking pixels contribute to this size. Gmail may decide to clip emails past this limit if the content is deemed less important. Priority should be given to important content before the 102KB threshold.

Key findings

  • HTML Size Matters: Gmail's 102KB limit is determined by the HTML code size.
  • External Elements Excluded: Linked images and external CSS do not contribute to the HTML size calculation.
  • All HTML Counts: Text, HTML tags, inline CSS, comments, and tracking pixels all add to the HTML code size.
  • Content Priority: Gmail might clip less important content after the 102KB limit.

Key considerations

  • Prioritize Content: Place the most critical content before the 102KB mark.
  • Optimize HTML: Minimize HTML code size to stay within the 102KB limit.
  • Consider All HTML Elements: Be mindful that all HTML elements, including comments and tracking pixels, impact the size.
Technical article

Documentation from Mailchimp explains Gmail checks the complete HTML code size. Elements that add to it include: text, HTML tags, inline CSS, comments, and tracking pixels.

November 2021 - Mailchimp
Technical article

Documentation from Litmus shares that Gmail specifically looks at the HTML body of the email when determining whether to clip a message. External CSS files or linked images do not contribute to the HTML size.

May 2023 - Litmus
Technical article

Documentation from Google Support explains that Gmail clips messages exceeding 102 KB in size. However, this limit applies to the HTML code of the email, not the total size including images.

November 2022 - Google Support
Technical article

Documentation from Campaign Monitor explains if Gmail thinks the content after 102kb is not important it may clip it. Try to add the most important content before the 102kb limit.

December 2021 - Campaign Monitor