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Beyond Encryption Mailock for M365 is a commercial email encryption tool by Beyond Encryption. Trustifi Outbound Shield is a commercial email encryption tool by TrustiFi. Compare features, ratings, integrations, and community reviews side by side to find the best email encryption fit for your security stack.
Based on our analysis of NIST CSF 2.0 coverage, core features, integrations, company size fit, here is our conclusion:
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.
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.
AES-256 encrypted email add-on for M365 with auth & revocation.
Outbound email security with automated encryption and DLP for compliance
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Common questions about comparing Beyond Encryption Mailock for M365 vs Trustifi Outbound Shield for your email encryption needs.
Beyond Encryption Mailock for M365: AES-256 encrypted email add-on for M365 with auth & revocation. built by Beyond Encryption. headquartered in United Kingdom. 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)..
Trustifi Outbound Shield: Outbound email security with automated encryption and DLP for compliance. built by TrustiFi. headquartered in United States. Core capabilities include Automated email encryption based on administrator policies, AES 256-bit end-to-end encryption, Real-time data loss prevention scanning..
Both serve the Email Encryption market but differ in approach, feature depth, and target audience.
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