This tutorial is 100% for Education Purpose only. Any time the word “Hacking” that is used on this site shall be regarded as Ethical Hacking. Do not attempt to violate the law with anything contained here. If you planned to use the content for illegal purposes, then please leave this site immediately! We will not be responsible for any illegal actions.

theharvester – A tool for gathering e-mail accounts and subdomain names from public sources

Usage Example:

Search from email addresses from a domain (-d kali.org), limiting the results to 500 (-l 500), using Google (-b google):