Beyond Encryption Mailock for M365 vs ShareFile Email & File 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.

ShareFile Email & File Encryption

Teams managing sensitive file handoffs across mixed email clients need ShareFile Email & File Encryption for its native Outlook and Gmail plugins that encrypt without forcing users into a web portal. SSAE 16 Type II certification and 256-bit encryption covering data in transit and at rest address the PR.DS requirement, while its 100 GB secure sharing ceiling handles most compliance workflows without friction. Skip this if you need granular audit trails and revocation controls; ShareFile encrypts well but treats governance as secondary to ease of use.