> For the complete documentation index, see [llms.txt](https://wiki.pentestlist.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wiki.pentestlist.com/offensive-security/external-infrastructure/discovery/email-address-discovery.md).

# Email Address Discovery

## Generic Email Address Discovery

### Email Finder

Find emails via search engines using a domain.

* <https://github.com/Josue87/EmailFinder>

`./emailfinder -d domain.com`

### emailGuesser

Guess email addresses based on multiple inputs and preferences. The tool will then try and check that the generated email address is valid.&#x20;

* <https://github.com/WhiteHatInspector/emailGuesser>

`python3 emailGuesser.py`

## o365 User Discovery

### OneDrive Enum

Enumerate valid o365 users

* <https://github.com/nyxgeek/onedrive_user_enum>

`python3 onedrive_enum.py -t microsoft -d` [`microsoft.com`](http://microsoft.com/) `-U firstlastname.txt`

## G-Suite User Discovery

### G-Suite email finding

Find valid email accounts using Gmail/G-Suite

* <https://github.com/evilsocket/legba>

`legba http.enum --payloads <employees-names.txt> --http-success-string "COMPASS" --http-success-codes 204 --quiet --target "https://mail.google.com/mail/gxlu?email={PAYLOAD}@broadcom.com"`

## Email Address Discovery via LinkedIn

### linkedin2username

Generate username lists for companies on LinkedIn

* <https://github.com/initstring/linkedin2username>

`python3 linkedin2username.py -u <GitHub Email> -c linkedin <Company> -p`

## Email Address Discovery via Third Party Sources

The following websites actively track and record valid email addresses for marketing purposes. But, we can make use of them in offensive security too.&#x20;

* Hunter.io&#x20;
* <https://rocketreach.co>


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