> For the complete documentation index, see [llms.txt](https://hackzzz.gitbook.io/welcome/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hackzzz.gitbook.io/welcome/everything-about-and-notes/osint/discovering-email-address.md).

# Discovering Email Address

These resources will let find, how the email is created, if is valid, get a bunch of emails from specific domains and more.

* Hunter.io - <https://hunter.io/>
* Phonebook.cz - <https://phonebook.cz/>
* Email Hippo - <https://www.emailhippo.com/>
* Email checker - <https://hunter.io/email-verifier>
* Email Permutator - <http://metricsparrow.com/toolkit/email-permutator/>