Common Non-Supported Elements
JavaScript: Most email clients disable JavaScript for security reasons. It’s best to avoid using it in emails.
Flash and Other Plugins: Flash and similar plugins are not supported in modern email clients. Stick to
HTML5 alternatives.
External CSS: Some email clients strip out
external stylesheets. Inline CSS is a safer bet.
Forms: Interactive elements like forms are often not supported. If you need user interaction, consider a
call-to-action link instead.
Animated GIFs: While many clients support GIFs, some like Outlook 2007-2016 only display the first frame. Use GIFs wisely and ensure the first frame is meaningful.
How to Test for Non-Supported Elements?
Before sending out your email campaign, it’s essential to test it across various email clients. Use tools like
Litmus or
Email on Acid to preview how your email will render in different environments. This helps identify and rectify any issues related to non-supported elements.
Best Practices to Avoid Non-Supported Elements
Here are some best practices to ensure your emails are compatible across all clients: Use Inline CSS: Since external stylesheets are not supported everywhere, inline CSS is a safer choice.
Opt for Simple Layouts: Complex layouts can break in certain email clients. Stick to simple, responsive designs.
Fallbacks for Images: Use
alt text and background colors as fallbacks for images. Some clients block images by default.
Test on Multiple Clients: Regular testing on various email clients will help you identify any rendering issues.
Stay Updated: Email clients frequently update their support for HTML and CSS. Stay updated with the latest changes to adapt accordingly.
Conclusion
Understanding and avoiding non-supported elements in
email marketing is essential for ensuring a seamless user experience. By adhering to best practices and regularly testing your emails, you can significantly improve the effectiveness of your campaigns.