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Beyond Encryption Mailock for Outlook is a commercial email encryption tool by Beyond Encryption. Kiteworks Secure Email is a commercial email encryption tool by Kiteworks. 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 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.
Mid-market and enterprise teams handling regulated data through email will find Kiteworks Secure Email worth the deployment effort because its policy automation engine actually enforces DLP rules at send-time rather than just logging violations afterward. FIPS 140-2 validated encryption across S/MIME, OpenPGP, and TLS 1.3 plus sandboxing and content disarm coverage address the PR.DS and PR.PS controls that compliance auditors actually ask about. Skip this if your organization needs a lightweight, user-friction-free solution; Kiteworks requires integration work and will surface policy violations that force conversations with business teams about what email traffic is actually allowed.
Outlook add-in for end-to-end email encryption with recipient auth & revoke.
Secure email platform with encryption, DLP, and policy automation
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Common questions about comparing Beyond Encryption Mailock for Outlook vs Kiteworks Secure Email 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..
Kiteworks Secure Email: Secure email platform with encryption, DLP, and policy automation. built by Kiteworks. headquartered in United States. Core capabilities include Multiple encryption methods (S/MIME, OpenPGP, TLS 1.3, AES-256), FIPS 140-2 validated encryption, Email Protection Gateway with automated policy enforcement..
Both serve the Email Encryption market but differ in approach, feature depth, and target audience.
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