MessageText-based

`message/feedback-report`

Email Feedback Report

Reference for message/feedback-report, the MIME type for email abuse and feedback reports (ARF) sent between mail providers.

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HTTP Content-Type Header

HTTP Header

Content-Type: message/feedback-report; charset=utf-8

Quick Facts

MIME Type	message/feedback-report
Category	Message
Type	Text-based (human-readable)

Common Usage

Abuse Reporting Format (ARF) feedback reports are sent between email providers to report spam, phishing, and abuse. They are used by ISPs, email hosting providers, and anti-abuse organizations to process complaints and maintain sender reputation systems like Gmail Postmaster.

Code Examples

HTML

<!-- Set MIME type in meta or fetch headers -->
<meta http-equiv="Content-Type" content="message/feedback-report">

Node.js

// Express.js
app.get('/file', (req, res) => {
  res.type('message/feedback-report');
  res.send(data);
});

// Node.js http
res.writeHead(200, { 'Content-Type': 'message/feedback-report' });

nginx

# nginx.conf — add to types block or use default
types {
    message/feedback-report  report;
}

# Or set for a specific location
location /api/ {
    default_type message/feedback-report;
}