Beyond Encryption Mailock for M365 vs OpenText Core Email Encryption: 2026 Comparison

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.

OpenText Core Email Encryption

Mid-market and enterprise teams drowning in email DLP false positives will appreciate OpenText Core Email Encryption's BMOD engine, which routes encrypted mail through the delivery method least likely to break business workflows,TLS for internal recipients, secure portal for external ones. The platform ships with pre-built policy templates that actually work out of the box, cutting weeks from typical email encryption deployments. Skip this if your organization needs advanced threat detection on encrypted traffic itself; Core Email Encryption secures the channel but doesn't inspect what flows through it.