Beyond Encryption Mailock for M365 vs Trustifi Outbound Shield: Side-by-Side Comparison (2026)

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.

Trustifi Outbound Shield

Mid-market and enterprise teams handling regulated data will find Trustifi Outbound Shield's appeal in its automated encryption policies paired with real-time DLP scanning, cutting implementation friction that typically derails compliance projects. The tool covers 10+ regulatory frameworks out of the box and supports both Exchange on-premise and Office 365, meaning you're not forced into cloud-only architecture. Skip this if your organization needs endpoint detection or network monitoring; Trustifi stays in the email lane and makes no apologies for it.