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Beyond Encryption Mailock for M365 is a commercial email encryption tool by Beyond Encryption. PreVeil Security is a commercial email encryption tool by PreVeil. Compare features, ratings, integrations, and community reviews side by side to find the best email encryption fit for your security stack.
Based on our analysis of NIST CSF 2.0 coverage, core features, integrations, company size fit, here is our conclusion:
SMB and mid-market teams standardized on Microsoft 365 should pick Beyond Encryption Mailock for M365 if message revocation is non-negotiable; the ability to recall emails even after a recipient opens them covers the mistake you'll inevitably make sending sensitive data to the wrong person. AES-256 encryption with SMS and Q&A recipient verification handles NIST PR.AA without requiring users to manage separate identity infrastructure. Skip this if your organization needs DLP that catches data before it leaves the network or if you're already enforcing encryption at the gateway level; Mailock layers on top of M365 rather than replacing email security controls.
Mid-market and enterprise teams handling classified or controlled data will get the most from PreVeil Security because its zero-trust architecture eliminates the server as a decryption point, which is the actual attack surface most email encryption tools ignore. DFARS and ITAR compliance is built in, not bolted on, and the cryptographic key-based authentication replaces the password attack vector entirely. Skip this if your organization needs broad endpoint protection or threat detection; PreVeil is encryption and access control, period, and it assumes you're handling that threat layer elsewhere.
AES-256 encrypted email add-on for M365 with auth & revocation.
End-to-end encrypted email & file sharing with zero-trust architecture.
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Common questions about comparing Beyond Encryption Mailock for M365 vs PreVeil Security for your email encryption needs.
Beyond Encryption Mailock for M365: AES-256 encrypted email add-on for M365 with auth & revocation. built by Beyond Encryption. headquartered in United Kingdom. Core capabilities include AES-256 end-to-end email encryption, Recipient identity verification via SMS, Q&A, or Unipass ID, Message revocation after send (including post-open)..
PreVeil Security: End-to-end encrypted email & file sharing with zero-trust architecture. built by PreVeil. headquartered in United States. Core capabilities include End-to-end encryption ensuring data is never decrypted on the server, Cryptographic key-based authentication replacing passwords, Approval Groups for distributed cryptographic admin access control..
Both serve the Email Encryption market but differ in approach, feature depth, and target audience.
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