What is MIME type "message/x-emlx"?

A MIME type is a string that tells browsers and other tools how to handle a particular kind of file.

message/x-emlx is a MIME type used by Apple's Mail application. It represents an individual email message stored in a file with a EMLX extension. The file holds not only the message body but also its header information and sometimes references to attachments.

This format allows email clients to process each message as a discrete file. It is not standardized like some other MIME types, but it works well in macOS environments.
It uses plain text with extra metadata to keep track of email details.

• Primary use: Storing individual email messages from Apple Mail.
• Archival: Supports email backup and migration on macOS.
• Processing: Helps email clients easily open, read, and sort messages.

Note: Although the format is text-based, some sections might be encoded to handle special characters or attachments. For more on MIME types, visit the MIME Wikipedia article.

Associated file extensions

.emlx

Usage Examples

HTTP Header

When serving content with this MIME type, set the Content-Type header:

    Content-Type: message/x-emlx
  

HTML

In HTML, you can specify the MIME type in various elements:

    <a href="file.dat" type="message/x-emlx">Download file</a>
  

Server-side (Node.js)

Setting the Content-Type header in Node.js:

    const http = require('http');
    
    http.createServer((req, res) => {
      res.setHeader('Content-Type', 'message/x-emlx');
      res.end('Content here');
    }).listen(3000);
  

Associated file extensions

.emlx