Beyond Encryption Mailock for M365 vs Egress Protect: Side-by-Side Comparison (2026)

Beyond Encryption Mailock for M365: AES-256 encrypted email add-on for M365 with auth & revocation. built by Beyond Encryption. 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)..

Egress Protect: End-to-end email encryption with DLP and access controls for Microsoft 365. built by Egress. 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.

Beyond Encryption Mailock for M365 differentiates with AES-256 end-to-end email encryption, Recipient identity verification via SMS, Q&A, or Unipass ID, Message revocation after send (including post-open). Egress Protect differentiates with 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 is developed by Beyond Encryption. Egress Protect is developed by Egress. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

Beyond Encryption Mailock for M365 integrates with Microsoft 365, Microsoft Outlook, Exchange Online, Unipass ID, CRM (generic). Egress Protect integrates with Microsoft 365, Microsoft Office 365, Outlook, Outlook Web Access, Microsoft Purview Information Protection and 3 more. Check integration compatibility with your existing security stack before deciding.

Beyond Encryption Mailock for M365 and Egress Protect serve similar Email Encryption use cases: both are Email Encryption tools, both cover Encryption, Microsoft 365. Review the feature comparison above to determine which fits your requirements.