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Beyond Encryption Mailock for Outlook is a commercial email encryption tool by Beyond Encryption. PreVeil is a free 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.
CST VerdictBased on our analysis of NIST CSF 2.0 coverage, core features, integrations, company size fit, here is our conclusion:
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.
Small teams and individual contributors who need encrypted email without deployment friction should use PreVeil Express; the browser-based client requires zero IT overhead and the free tier removes budget as an objection. The desktop version supports passwordless login and unlimited file uploads, which matters if you're moving sensitive files regularly. Skip this if your organization needs centralized key management, audit logging, or admin controls; PreVeil prioritizes user privacy over institutional governance, which is the opposite of what compliance-heavy enterprises need.
Outlook add-in for end-to-end email encryption with recipient auth & revoke.
Free E2E encrypted email & file sharing for browser and desktop.
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Common questions about comparing Beyond Encryption Mailock for Outlook vs PreVeil for your email encryption needs.
Beyond Encryption Mailock for Outlook: Outlook add-in for end-to-end email encryption with recipient auth & revoke. built by Beyond Encryption. headquartered in United Kingdom. Core capabilities include End-to-end AES-256 email and attachment encryption, Recipient authentication via SMS, Q&A, or Unipass ID, One-click secure email composition from the Outlook ribbon..
PreVeil: Free E2E encrypted email & file sharing for browser and desktop. built by PreVeil. headquartered in United States. Core capabilities include End-to-end encrypted email messaging, Encrypted file sharing, Secure cloud drive sync and storage..
Both serve the Email Encryption market but differ in approach, feature depth, and target audience.
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