StealthMail is an enterprise email security solution that protects business email communication by making email content invisible to mail relays, intermediaries, and public internet threats. Instead of sending email content directly, StealthMail transmits only "Stealth-Links" via standard email channels — these links contain no user information and require authentication to access the actual encrypted content and attachments. The product uses a proprietary Secure Dynamic Network Protocol (SDNP) and applies multiple layers of cryptographic protection: - ECC 512+ bit elliptic curve for encryption keys - TWOFISH 256-bit for data transfer - 512-bit HMAC key for messaging - RSA 8192-bit for signature and authentication - AES 256-bit for data storage - SHA-3 512-bit for password hashing Key security capabilities include time-sensitive encryption, end-to-end encryption where keys are generated and stored exclusively on the user side, and role-based access controls. Users retain sole ownership of encryption keys and can choose where to store email content — on local company servers, in the cloud, or in StealthMail's own storage. The solution addresses threats including phishing, spear-phishing, Business Email Compromise (BEC), Email Account Compromise (EAC), Man-in-the-Middle (MITM) attacks, and wire fraud by bypassing SMTP and SSL/TLS vulnerabilities entirely. StealthMail supports regulatory compliance with GDPR, HIPAA, GLBA, and SOX, and provides controls such as restricting reply, forward, copy, and print permissions, recalling delivered emails, and monitoring access to shared content. It is available on Windows, Mac, and Android.