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Beyond Encryption Mailock for Outlook is a commercial email encryption tool by Beyond Encryption. Egress Protect is a commercial email encryption tool by Egress. 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 protecting sensitive data in Microsoft 365 should choose Egress Protect for its post-send message control, which lets you revoke access and restrict forwarding even after recipients open encrypted email. The tool covers three NIST CSF 2.0 functions (PR.DS, PR.AA, DE.CM), with particular strength in access enforcement through granular controls and continuous audit trails that satisfy compliance auditors. Skip this if you need unified DLP across cloud storage, web, and endpoints; Egress Protect is email-centric and won't replace a platform-wide data loss prevention strategy.
Outlook add-in for end-to-end email encryption with recipient auth & revoke.
End-to-end email encryption with DLP and access controls for Microsoft 365
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Common questions about comparing Beyond Encryption Mailock for Outlook vs Egress Protect 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..
Egress Protect: End-to-end email encryption with DLP and access controls for Microsoft 365. built by Egress. headquartered in United Kingdom. Core capabilities include End-to-end email encryption with 256-bit AES, Automatic and sender-initiated encryption based on policies, Granular access controls to restrict forwarding, printing, copying, and downloading..
Both serve the Email Encryption market but differ in approach, feature depth, and target audience.
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