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

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. Developers and security teams building applications that need lightweight data masking without infrastructure overhead should reach for Data Protection and Cryptography. The free pricing and 630 GitHub stars signal active use in production environments where byte-level manipulation of sensitive data needs to happen inside application code rather than in a separate gateway. Skip this if your requirement is policy-driven data discovery across your entire data estate; this tool assumes you already know what to mask and where.

Based on our analysis of NIST CSF 2.0 coverage, core features, integrations, company size fit, here is our conclusion: