Hunter.io

Overview

Hunter.io is a professional email discovery service that indexes publicly available email addresses from websites, LinkedIn, corporate directories, and other sources. Its API provides domain-level email search, individual email lookup, email pattern detection, and deliverability verification. In OSINT contexts, Hunter is invaluable for building contact lists during pre-engagement recon and identifying employee email formats.

Requires: Hunter.io API key (free tier: 25 searches/month; paid plans for bulk use).

Instructions

Step 1: Setup

pip install requests

import requests
import time