Beyond Encryption Mailock for Outlook vs DataStealth Data Protection: Side-by-Side Comparison (2026)

Short answer

SMB and mid-market teams that need to stop encrypted emails from being forwarded or screenshotted after delivery should use Beyond Encryption Mailock for Outlook, since message revocation works even after recipients have opened attachments. The tool covers NIST PR.DS and PR.AA through AES-256 encryption and multi-factor recipient authentication, eliminating the "trust the recipient" problem that plagues standard TLS. Skip this if your org requires integration with Gmail or non-Microsoft clients; Mailock is Outlook-only and leaves users on other platforms without encryption protections. SMB and mid-market teams protecting sensitive data across hybrid environments will see immediate ROI from DataStealth Data Protection because it masks and tokenizes data at the field level without requiring application rewrites, letting you secure production data for testing and analytics in weeks instead of months. The platform's policy-driven tokenization with deterministic, reversible, and time-bound options covers PR.DS requirements across on-premises and cloud simultaneously, and support for both structured and unstructured data means you're not swapping tools later. Skip this if your use case is primarily encryption at rest on a single cloud platform; DataStealth's strength is the granular, no-code flexibility needed when you're moving masked data between test environments.