Quick Tutorial - Email OSINT

Open Source Intelligence (OSINT) is not an unknown term for most people who have an interest in technology. It denotes the methodology to identify information about the target available in the public domain. The main difference here is the collection of information is purely legal as you gather information via information available in the public domain. Click Here If you are interested in learning the Top 12 Open-Source Tools used to do OSINT.

Email OSINT is a method of collecting emails from target companies or individuals that are available in the public domain. This blog discusses methods and tools to collect email ids of target companies or individuals.

(1) Google

The ultimate tool to identify every piece of information of the target company or individual. Just use different search operators to identify more accurate and reliable information. Click Here to Learn 15 Google Search Tips & Tricks for Best Results.

(2) Hunter.io

A nice web-based application that provides a list of email ids just by giving the company name. This tool is not free and you need to pay some bucks to use it.

Link: https://hunter.io

(3) theHarvester

A pre-installed tool on Kali Linux. This tool gives email addresses in addition to other information from the public domain. Just shoot the below command to search emails:

theHarvester -d gmail.com -b all

(4) Emailrep.io

This web-based tool just gives the reputation of email. Also, provide source details and reasoning for the results.

Link: emailrep.io

(5) Phonebook.cz

This is totally free tool to identify the email addresses of a particular company. It will provide a list of email addresses belonging to the company.

Link: https://phonebook.cz

(6) emailHippo

This simple tool is used to provide accuracy of email id whether it is working or not. This tool also provides information related to different details such as mailbox existence, domain, etc.

Link: https://tools.emailhippo.com/

(7) Email Checker

This is another tool to check the correctness of the email and to check whether an email is valid or not.

Link: https://email-checker.net/

(8) By using other search engines

Must use other search engines such as Bing, Yahoo, etc. to extract more information related to the target. You never know what new info and emails you got it.


This blog lists different OSINT tools and methods to search emails of target companies or individuals. Some of the tools listed above are completely free and you can easily find information just by using different search engines that have you used in your daily life.

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If you have any questions, feel free to ask in the comments section below. Nothing gives me greater joy than helping my readers!

Disclaimer: This tutorial is for educational purpose only. Individual is solely responsible for any illegal act.

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