Beyond Encryption Mailock for M365 vs Green Radar grKey: 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..

Green Radar grKey: built by Green Radar..

Both serve the Email Encryption market but differ in approach, feature depth, and target audience.

Beyond Encryption Mailock for M365 is developed by Beyond Encryption. Green Radar grKey is developed by Green Radar. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

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