# Holehe Module Categories: Complete Guide to 21 OSINT Reconnaissance Types > Explore Holehe's 21 OSINT reconnaissance module categories. Discover how this powerful tool categorizes email checks for comprehensive security analysis. Learn more today. - Repository: [Palenath/holehe](https://github.com/megadose/holehe) - Tags: deep-dive - Published: 2026-08-30 --- **Holehe organizes its email reconnaissance checks into 21 distinct module categories, each represented as a sub-package under `holehe/modules` with individual Python files implementing specific service checks.** Holehe is an open-source OSINT tool for checking whether an email address is registered on various online services. The megadose/holehe repository structures these checks into logical **module categories** based on service type. Understanding these categories helps security researchers and investigators target specific platforms during reconnaissance operations. ## How Module Categories Are Structured in Holehe The category system in Holehe follows a simple folder hierarchy. Each category is a sub-directory under `holehe/modules/`, and each service implementation is a standalone Python file within that directory. For example, checking if an email has a Facebook account uses the module at [`holehe/modules/social_media/facebook.py`](https://github.com/megadose/holehe/blob/main/holehe/modules/social_media/facebook.py). The core engine in [`holehe/core.py`](https://github.com/megadose/holehe/blob/main/holehe/core.py) discovers and loads these modules dynamically at runtime. This architecture makes the tool extensible: adding support for a new service requires only placing a properly structured Python file in the appropriate category folder. ## The 21 Module Categories in Holehe Holehe currently supports the following module categories, with representative examples for each: ### Social Media The most extensive category, covering major platforms. [`facebook.py`](https://github.com/megadose/holehe/blob/main/facebook.py) in `holehe/modules/social_media/` implements checks for Facebook account existence via email lookup. ### Transport Ride-sharing and travel services. [`blablacar.py`](https://github.com/megadose/holehe/blob/main/blablacar.py) in `holehe/modules/transport/` checks the European carpooling platform BlaBlaCar. ### Sport Fitness and sports-related platforms. [`bodybuilding.py`](https://github.com/megadose/holehe/blob/main/bodybuilding.py) in `holehe/modules/sport/` targets the Bodybuilding.com community. ### Software Enterprise and consumer software services. [`office365.py`](https://github.com/megadose/holehe/blob/main/office365.py) in `holehe/modules/software/` detects Microsoft 365 organizational tenants. ### Shopping E-commerce and retail platforms. [`vivino.py`](https://github.com/megadose/holehe/blob/main/vivino.py) in `holehe/modules/shopping/` checks the wine e-commerce community Vivino. ### Real Estate Property rental and sales platforms. [`vrbo.py`](https://github.com/megadose/holehe/blob/main/vrbo.py) in `holehe/modules/real_estate/` targets the vacation rental service Vrbo. ### Programming Developer and code-hosting platforms. [`github.py`](https://github.com/megadose/holehe/blob/main/github.py) in `holehe/modules/programing/` (note the spelling) checks GitHub account registration. ### Productivity Note-taking and workflow tools. [`evernote.py`](https://github.com/megadose/holehe/blob/main/evernote.py) in `holehe/modules/productivity/` checks Evernote account status. ### Payment Financial and money transfer services. [`venmo.py`](https://github.com/megadose/holehe/blob/main/venmo.py) in `holehe/modules/payment/` verifies Venmo account existence. ### OSINT Intelligence and professional data services. [`rocketreach.py`](https://github.com/megadose/holehe/blob/main/rocketreach.py) in `holehe/modules/osint/` checks the RocketReach professional contact database. ### Music Streaming and audio platforms. [`spotify.py`](https://github.com/megadose/holehe/blob/main/spotify.py) in `holehe/modules/music/` implements Spotify account verification. ### Medical Health and wellness communities. [`sevencups.py`](https://github.com/megadose/holehe/blob/main/sevencups.py) in `holehe/modules/medical/` checks the 7 Cups emotional support platform. ### Medias Photo and video hosting services. [`flickr.py`](https://github.com/megadose/holehe/blob/main/flickr.py) in `holehe/modules/medias/` targets the Yahoo photo sharing service. ### Mails Email service providers. [`google.py`](https://github.com/megadose/holehe/blob/main/google.py) in `holehe/modules/mails/` checks Gmail/Google account registration (named [`google.py`](https://github.com/megadose/holehe/blob/main/google.py) rather than [`gmail.py`](https://github.com/megadose/holehe/blob/main/gmail.py)). ### Learning Educational and knowledge platforms. [`quora.py`](https://github.com/megadose/holehe/blob/main/quora.py) in `holehe/modules/learning/` verifies Quora account existence. ### Jobs Employment and freelance marketplaces. [`freelancer.py`](https://github.com/megadose/holehe/blob/main/freelancer.py) in `holehe/modules/jobs/` checks the Freelancer.com platform. ### Forum Community discussion boards. [`thevapingforum.py`](https://github.com/megadose/holehe/blob/main/thevapingforum.py) in `holehe/modules/forum/` targets a specific vaping community. ### Crowdfunding Donation and fundraising platforms. [`buymeacoffee.py`](https://github.com/megadose/holehe/blob/main/buymeacoffee.py) in `holehe/modules/crowfunding/` (note the spelling) checks Buy Me a Coffee creator accounts. ### CRM Customer relationship management tools. [`hubspot.py`](https://github.com/megadose/holehe/blob/main/hubspot.py) in `holehe/modules/crm/` checks HubSpot user registration. ### Company Professional identity and business platforms. [`aboutme.py`](https://github.com/megadose/holehe/blob/main/aboutme.py) in `holehe/modules/company/` verifies About.me profile existence. ### CMS Content management systems. [`wordpress.py`](https://github.com/megadose/holehe/blob/main/wordpress.py) in `holehe/modules/cms/` checks WordPress.com account registration. ## Working with Module Categories Programmatically You can import and run specific modules directly from their category paths: ```python from holehe.core import Core from holehe.modules.social_media.facebook import Facebook core = Core() result = Facebook().run(email="example@example.com") print(result) ``` To list all available modules and their categories, use the CLI: ```bash holehe -l ``` This outputs each module prefixed with its category, such as `social_media.facebook`, `payment.venmo`, or `crm.hubspot`. ## Key Architecture Files Supporting Module Categories Several core files enable this category system: - [`holehe/modules/__init__.py`](https://github.com/megadose/holehe/blob/main/holehe/modules/__init__.py) — Package initializer that exposes all category sub-packages - [`holehe/core.py`](https://github.com/megadose/holehe/blob/main/holehe/core.py) — Central engine handling module discovery, categorization, and execution - [`holehe/instruments.py`](https://github.com/megadose/holehe/blob/main/holehe/instruments.py) — Shared HTTP utilities and response parsers used across categories - [`holehe/localuseragent.py`](https://github.com/megadose/holehe/blob/main/holehe/localuseragent.py) — Request header rotation for all module requests These components work together to provide a consistent interface regardless of which category a module belongs to. ## Summary - Holehe uses **21 module categories** organized as sub-packages under `holehe/modules/` - Each category contains Python files implementing service-specific **email registration checks** - Categories range from **social_media** and **payment** to specialized niches like **medical** and **real_estate** - The **dynamic loading system** in [`holehe/core.py`](https://github.com/megadose/holehe/blob/main/holehe/core.py) discovers modules automatically from this folder structure - Adding new services requires only creating a properly structured file in the appropriate category folder ## Frequently Asked Questions ### How do I add a new service to an existing category in Holehe? Create a new Python file in the appropriate `holehe/modules//` directory. The file must expose a class matching the module name with a `run()` method that accepts an email parameter. Follow the pattern in existing files like [`holehe/modules/social_media/facebook.py`](https://github.com/megadose/holehe/blob/main/holehe/modules/social_media/facebook.py). The core engine will auto-discover your module on the next run. ### Can I run modules from only one category at a time? Yes. Use the module prefix filter when running Holehe. The CLI accepts category patterns, and the Python API allows importing specific modules directly from their category path (e.g., `from holehe.modules.payment import venmo`). ### Why is the Programming category spelled "programing" in the source code? The directory is named `programing/` (one 'm') in the megadose/holehe repository. This is an intentional spelling variation in the codebase. Import statements and file paths must use this spelling: [`holehe/modules/programing/github.py`](https://github.com/megadose/holehe/blob/main/holehe/modules/programing/github.py).