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Egress Protect is a commercial email encryption tool by Egress. Beyond Encryption Mailock for M365 is a commercial email encryption tool by Beyond Encryption. 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:
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.
Beyond Encryption Mailock for M365
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.
End-to-end email encryption with DLP and access controls for Microsoft 365
AES-256 encrypted email add-on for M365 with auth & revocation.
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Common questions about comparing Egress Protect vs Beyond Encryption Mailock for M365 for your email encryption needs.
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..
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)..
Both serve the Email Encryption market but differ in approach, feature depth, and target audience.
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