Beyond Encryption Mailock for Outlook vs Retarus Enterprise Cloud Fax: Side-by-Side Comparison (2026)

Beyond Encryption Mailock for Outlook: Outlook add-in for end-to-end email encryption with recipient auth & revoke. built by Beyond Encryption. Core capabilities include End-to-end AES-256 email and attachment encryption, Recipient authentication via SMS, Q&A, or Unipass ID, One-click secure email composition from the Outlook ribbon..

Retarus Enterprise Cloud Fax: Cloud-based enterprise fax service for secure document transmission. built by Retarus. Core capabilities include Email-to-fax transmission, API integration for fax operations, HITRUST e1 certified backend infrastructure..

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

Beyond Encryption Mailock for Outlook differentiates with End-to-end AES-256 email and attachment encryption, Recipient authentication via SMS, Q&A, or Unipass ID, One-click secure email composition from the Outlook ribbon. Retarus Enterprise Cloud Fax differentiates with Email-to-fax transmission, API integration for fax operations, HITRUST e1 certified backend infrastructure.

Beyond Encryption Mailock for Outlook is developed by Beyond Encryption. Retarus Enterprise Cloud Fax is developed by Retarus. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

Beyond Encryption Mailock for Outlook integrates with Microsoft Outlook, Unipass ID. Retarus Enterprise Cloud Fax integrates with SAP, Microsoft Outlook/Exchange, LDAP, EHR systems. Check integration compatibility with your existing security stack before deciding.

Beyond Encryption Mailock for Outlook and Retarus Enterprise Cloud Fax serve similar Email Encryption use cases: both are Email Encryption tools, both cover Encryption. Review the feature comparison above to determine which fits your requirements.