Overview

The Email Header Analyser API provides deep inspection and forensic analysis of email message headers. Security professionals, incident responders, and email administrators use this tool to identify spoofing attempts, trace message routing, validate authentication protocols (SPF, DKIM, DMARC), and detect malicious headers.

Email headers contain critical metadata that reveals the true origin of messages, intermediate mail servers, and authentication status. This API parses raw headers and extracts actionable intelligence for phishing investigations, compliance audits, and email security operations.

Ideal users include SOC analysts, email security teams, incident response professionals, forensic investigators, and organizations requiring email authentication verification and threat intelligence capabilities.

Usage

Sample Request

{
  "header": "Received: from mail.example.com (mail.example.com [192.0.2.1]) by mx.targetdomain.com with SMTP id abc123; Wed, 15 Jan 2025 10:30:45 +0000\nFrom: sender@example.com\nTo: recipient@targetdomain.com\nSubject: Security Analysis\nAuthentication-Results: targetdomain.com; spf=pass smtp.mailfrom=sender@example.com; dkim=pass header.d=example.com; dmarc=pass\nReturn-Path: <sender@example.com>\nDate: Wed, 15 Jan 2025 10:30:45 +0000"
}

Sample Response

{
  "sender_ip": "192.0.2.1",
  "sender_domain": "mail.example.com",
  "from_address": "sender@example.com",
  "to_address": "recipient@targetdomain.com",
  "received_servers": [
    {
      "hostname": "mail.example.com",
      "ip": "192.0.2.1",
      "timestamp": "2025-01-15T10:30:45Z"
    },
    {
      "hostname": "mx.targetdomain.com",
      "ip": null,
      "timestamp": null
    }
  ],
  "authentication": {
    "spf": "pass",
    "dkim": "pass",
    "dmarc": "pass"
  },
  "subject": "Security Analysis",
  "date": "2025-01-15T10:30:45Z",
  "return_path": "sender@example.com",
  "suspicious_indicators": []
}

Endpoints

POST /analyze-header

Analyzes a raw email header to extract authentication, routing, and security metadata.

Method: POST
Path: /analyze-header

Request Parameters:

Parameter	Type	Required	Description
header	string	Yes	Raw email header text containing one or more Received headers, authentication headers, and message metadata.

Response Schema:

The response contains extracted header analysis including:

Field	Type	Description
sender_ip	string	IP address of the originating mail server.
sender_domain	string	Hostname of the originating mail server.
from_address	string	Email address in the From header.
to_address	string	Email address in the To header.
received_servers	array	List of mail servers in the routing path with hostname, IP, and timestamp.
authentication	object	Authentication protocol results (spf, dkim, dmarc status).
subject	string	Email subject line.
date	string	Message date in ISO 8601 format.
return_path	string	Return-Path header value.
suspicious_indicators	array	List of detected anomalies or security concerns.

Status Codes:

200: Successful analysis returned.
422: Validation error—header field missing or invalid.

Pricing

Plan	Calls/Day	Calls/Month	Price
Free	5	50	Free
Developer	20	500	$39/mo
Professional	200	5,000	$99/mo
Enterprise	100,000	1,000,000	$299/mo

About

ToolWeb.in - 200+ security APIs, CISSP & CISM, platforms: Pay-per-run, API Gateway, MCP Server, OpenClaw, RapidAPI, YouTube.

References

Kong Route: https://api.mkkpro.com/security/email-header-analyser
API Docs: https://api.mkkpro.com:8016/docs

Email Header Analyser

安装技能