Holehe

Tool manual · Kali & common usage

OSINT · Beginner · OSINT lane

BeginnerOSINT — Email

Authorized usage only. Capture and inspect traffic only on systems and networks you own or have written permission to analyze.

What is Holehe?

Holehe checks whether an email is registered on various sites.

Email OSINT for breach/account presence — lawful use only.

Official website: Holehe · Documentation

When do you use it?

You need Check if an email is registered on many sites (no password needed).
You are following a CYNARKS lab or authorized engagement that calls for Holehe.
You already tried simpler checks and need this tool’s deeper capability.

Who uses it?

OSINT analysts
Investigators (lawful use)
Red teamers (authorized recon)

How do you use it? (typical flow)

Install Holehe using the steps below (prefer Kali package or official installer).
Confirm you have authorization for the target (lab VM, own system, or written scope).
Run --help / man (or the Help section) to see current flags for your version.
Start with a safe example from Basic commands against localhost or an authorized lab target.
Record what you ran, what you observed, and any follow-up (filter, report, remediation).

Help & manual (like man / --help)

Every serious tool has a built-in way to look up flags. Learn these first so you are not stuck memorizing every option.

1. Help
```
holehe --help
```

Kali Linux

pip install holehe

1. Installation

OS	Installation
`Kali Linux`	pip install holehe
`pip`	pip install holehe

2. Basic commands

1. Check your corporate test mailbox
```
holehe test@yourdomain.com
```
Check your corporate test mailbox
2. Show help
```
holehe --help
```
List flags for your installed version (same habit as man/--help).
3. Short help
```
holehe -h
```
Alternate help flag when supported.

5. Useful features

Site coverage
Rate limits

6. Practical examples

Example 1: Check your corporate test mailbox
```
holehe test@yourdomain.com
```
Check your corporate test mailbox
Example 2: Show help
```
holehe --help
```
List flags for your installed version (same habit as man/--help).
Example 3: Short help
```
holehe -h
```
Alternate help flag when supported.

7. Important notes

Can reveal account existence — use under privacy/policy rules.
Authorized targets only — labs, systems you own, or written permission.
Prefer reading --help / man / official docs for your installed version; flags change over time.

Related course: ethical hacking penetration testing · soc analyst blue team · Commands: /osint