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Mailjet Email Content Not Rendering

HTML and CSS errors in the email template or incompatibility with email clients.

Understanding Mailjet: A Powerful Email Communication API

Mailjet is a comprehensive email communication API that allows developers to send, receive, and track emails effortlessly. It is designed to integrate seamlessly with applications, providing robust features for email marketing, transactional emails, and more. Mailjet's API is widely used for its reliability and ease of use, making it a popular choice among developers.

Identifying the Symptom: Email Content Not Rendering

One common issue developers encounter when using Mailjet is that the email content does not render correctly in the recipient's inbox. This can manifest as broken layouts, missing images, or unstyled text, leading to a poor user experience.

Common Observations

  • Emails appear differently across various email clients.
  • Images or styles are missing or not applied.
  • HTML elements are not displayed as intended.

Exploring the Issue: MJ-030

The error code MJ-030 is associated with email content rendering issues. This typically occurs due to errors in the HTML or CSS of the email template or incompatibility with certain email clients. Understanding the root cause is crucial for effective resolution.

Root Causes

  • Incorrect HTML structure or syntax errors.
  • Use of CSS properties not supported by email clients.
  • External resources not being loaded properly.

Steps to Fix the Issue

To resolve the MJ-030 issue, follow these actionable steps:

1. Validate HTML and CSS

Ensure that your HTML and CSS are error-free. Use tools like W3C HTML Validator and W3C CSS Validator to check for syntax errors and compatibility issues.

2. Test Across Email Clients

Test your email template across different email clients using services like Litmus or Email on Acid. These platforms provide insights into how your email renders in various environments.

3. Use Inline CSS

Many email clients do not support external stylesheets. Convert your CSS to inline styles to ensure compatibility. Tools like HTML Email Inline Styler can automate this process.

4. Optimize Images

Ensure that images are properly linked and optimized for email. Use absolute URLs and check that the images are accessible from the email client.

Conclusion

By following these steps, you can effectively resolve the MJ-030 issue and ensure that your email content renders correctly across all email clients. Regular testing and validation are key to maintaining high-quality email communications with Mailjet.

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