MailSpoof

MailSpoof is an open-source email spoofing and phishing simulation tool designed for authorized penetration testing and security awareness training. It features a built-in multi-threaded SMTP server, 62 pre-built phishing templates, custom template creation, and comprehensive audit logging alongside report generation capabilities. This tool is compatible across multiple platforms, including Linux and macOS, and supports bulk targeting, external SMTP relay configurations, and advanced header functionalities for enhanced testing scenarios.