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Domain Email Breach Scanners

Ranking updated Jun 30, 2026

For an email recon and breach lookup tool, the first results are thewhiteh4t/pwnedornot (PwnedOrNot directly matches your search as a breach-auditing CLI tool that enumerates emails for a given domain by querying the HaveIBeenPwned API, then reports exposure status — covering domain enumeration, breach lookup, bulk support, and output reporting in one package), khast3x/h8mail (h8mail is an OSINT tool purpose-built to enumerate email addresses from domains and check them against known breaches via remote APIs and local data dumps, covering exactly the domain enumeration, breach lookup, and CLI workflow this search requires) and alpkeskin/mosint (Mosint is an email OSINT framework that checks known breaches and links social accounts from an email address you provide, but it does not enumerate email addresses from a domain — you start with an email, not a domain). laramies/theharvester is also worth a look. Compare the match explanations and check the project documentation against your requirements.

Identify exposed email addresses and compromised user accounts associated with specific domains using automated discovery tools.

Domain Email Breach Scanners

Find the best repos with AI.We'll search the best matching repositories with AI.
  • thewhiteh4t/pwnedornotthewhiteh4t avatar

    thewhiteh4t/pwnedOrNot

    2,575View on GitHub↗

    pwnedOrNot is a search and auditing utility for querying breach metadata and verifying the exposure of email addresses and passwords in public data dumps. It functions as a data breach search engine designed to identify leaked credentials and assess account security. The tool provides capabilities for corporate domain auditing and email compromise detection, allowing for the identification of leaked addresses belonging to specific domains. It includes a password leak detector and the ability to scan public data dumps for plaintext passwords associated with compromised accounts. The system co

    PwnedOrNot directly matches your search as a breach-auditing CLI tool that enumerates emails for a given domain by querying the HaveIBeenPwned API, then reports exposure status — covering domain enumeration, breach lookup, bulk support, and output reporting in one package.

    PythonCompromised Account AuditorsData Breach Search ToolsBreach Detection
    View on GitHub↗2,575
  • khast3x/h8mailkhast3x avatar

    khast3x/h8mail

    4,891View on GitHub↗

    h8mail is an open-source intelligence tool for searching leaked credentials and compromised accounts across remote APIs and local data dumps. It functions as a credential leak hunter and email reconnaissance framework designed to identify exposed passwords and sensitive information using usernames, domains, IP addresses, and email hashes. The tool distinguishes itself through a recursive target expansion system that feeds newly discovered email addresses back into the search queue to broaden the scope of investigations. It also includes a local breach data parser that employs multiprocessing

    h8mail is an OSINT tool purpose-built to enumerate email addresses from domains and check them against known breaches via remote APIs and local data dumps, covering exactly the domain enumeration, breach lookup, and CLI workflow this search requires.

    PythonData Breach Search ToolsCredential Leak Databases
    View on GitHub↗4,891
  • alpkeskin/mosintalpkeskin avatar

    alpkeskin/mosint

    5,894View on GitHub↗

    Mosint is an email OSINT framework and intelligence tool designed to gather data and identify digital footprints associated with email addresses. It functions as a suite of automated utilities for email validation, breach scanning, and social account discovery. The tool maps digital identities by linking email addresses to social media profiles and identifying related identities to expand the scope of investigations. It includes a breach scanner that checks email addresses against known database leaks and password dumps to detect compromised accounts. The framework also covers network intell

    Mosint is an email OSINT framework that checks known breaches and links social accounts from an email address you provide, but it does not enumerate email addresses from a domain — you start with an email, not a domain.

    GoData Breach Search ToolsBreach Detection
    View on GitHub↗5,894
  • laramies/theharvesterlaramies avatar

    laramies/theHarvester

    15,687View on GitHub↗

    theHarvester is a command-line utility designed for gathering open-source intelligence and mapping an organization's external attack surface. It functions as a security information gathering framework that automates the collection of publicly available data to assist in reconnaissance and threat analysis. The tool utilizes a plugin-based architecture to execute isolated queries against various search engines and public databases. It employs asynchronous task execution to run multiple discovery operations in parallel, while a centralized pipeline aggregates and deduplicates findings from these

    theHarvester enumerates email addresses from public sources for a given domain, but it does not include built-in breach database lookup or check against known data breaches, making it a reconnaissance tool rather than a dedicated breach checker.

    PythonCommand Line Interfaces
    View on GitHub↗15,687
Compare the top 10 at a glance
RepositoryStarsLanguageLicenseLast push
thewhiteh4t/pwnedornot2.6KPythonMITMar 28, 2026
khast3x/h8mail4.9KPythonotherAug 15, 2023
alpkeskin/mosint
5.9K
Go
MIT
Feb 2, 2024
laramies/theharvester15.7KPython—Feb 20, 2026

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