Mailgun Invalid email body

The email body contains invalid or unsupported content.

Resolving 'Invalid Email Body' Error in Mailgun

Understanding Mailgun

Mailgun is a powerful email communication API provider that allows developers to send, receive, and track emails effortlessly. It is widely used for transactional emails, newsletters, and automated email campaigns. For more information, visit the Mailgun official website.

Identifying the Symptom

When using Mailgun, you might encounter an error message indicating an 'Invalid email body'. This typically means that the content of the email you are trying to send is not formatted correctly or contains unsupported elements.

Common Error Messages

The error message might look something like this: "Error: Invalid email body. Please check the content and try again."

Exploring the Issue

The 'Invalid email body' error occurs when the email content does not adhere to the expected format or includes unsupported characters or HTML tags. This can happen if the email body includes malformed HTML, unsupported media types, or special characters that are not properly encoded.

Root Causes

  • Malformed HTML tags or structure.
  • Unsupported media types or attachments.
  • Improperly encoded special characters.

Steps to Fix the Issue

To resolve the 'Invalid email body' error, follow these steps:

1. Validate HTML Content

Ensure that the HTML content of your email is well-formed. You can use online tools like W3C Markup Validation Service to check for any HTML errors.

2. Check for Unsupported Content

Verify that your email does not contain any unsupported media types or attachments. Mailgun supports a variety of content types, but it's essential to ensure compatibility. Refer to the Mailgun API documentation for supported content types.

3. Encode Special Characters

Make sure all special characters in your email body are properly encoded. This can prevent issues with character rendering. Use UTF-8 encoding for best compatibility.

4. Test Your Email

Before sending your email, test it using Mailgun's sandbox environment. This allows you to identify and fix issues without affecting your production environment.

Conclusion

By following these steps, you can resolve the 'Invalid email body' error and ensure that your emails are delivered successfully using Mailgun. For further assistance, consider reaching out to Mailgun Support.

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