Beyond Encryption Mailock for M365 vs OpenText Core Email Encryption: 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)..

OpenText Core Email Encryption: Cloud-based email encryption with automated DLP policies and delivery methods. built by OpenText Cybersecurity. Core capabilities include Automated email encryption based on DLP policies, Real-time scanning of outbound emails, Best Method of Delivery (BMOD) engine with S/MIME, TLS, and Secure Messaging Portal..

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). OpenText Core Email Encryption differentiates with Automated email encryption based on DLP policies, Real-time scanning of outbound emails, Best Method of Delivery (BMOD) engine with S/MIME, TLS, and Secure Messaging Portal.

Beyond Encryption Mailock for M365 is developed by Beyond Encryption. OpenText Core Email Encryption is developed by OpenText Cybersecurity. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

Beyond Encryption Mailock for M365 and OpenText Core Email Encryption serve similar Email Encryption use cases: both are Email Encryption tools. Review the feature comparison above to determine which fits your requirements.