h8mail

h8mail is an open source email OSINT and password breach hunting tool designed to help security professionals investigate compromised credentials associated with email addresses. It works by querying multiple breach and reconnaissance services to identify whether an email address has appeared in publicly leaked datasets. The tool can also search locally stored breach dumps, such as Troy Hunt’s “Collection1” or the widely known “Breach Compilation,” allowing investigators to analyze large credential datasets offline. h8mail aggregates information from these sources and organizes the results to help analysts quickly understand where and how an email address has been exposed. In addition to external services, it can integrate with premium APIs and data providers for more advanced breach intelligence capabilities. The tool is commonly used by penetration testers, OSINT investigators, and security researchers to detect compromised accounts and investigate credential leaks.