Beyond Encryption Mailock® Secure Email vs StealthMail: Side-by-Side Comparison (2026)

Beyond Encryption Mailock® Secure Email

Teams handling regulated data who need proof that sensitive emails were opened, not just sent, should consider Beyond Encryption Mailock® Secure Email; message tracking and revocation give you the audit trail that generic TLS encryption cannot. AES-256 encryption with multi-factor recipient verification covers the NIST PR.DS and PR.AA controls auditors actually ask for. Skip this if your priority is preventing internal data exfiltration rather than securing external communication; Mailock assumes the recipient's inbox is the trust boundary, not an extension of your network.

StealthMail

Mid-market and enterprise teams handling sensitive email workflows,healthcare, finance, legal,should evaluate StealthMail primarily for its recall and access control capabilities; most competitors encrypt content but can't revoke it post-delivery or prevent forwarding, and StealthMail does both. The hybrid deployment model and user-owned key management (ECC 512+) mean you're not trusting the vendor with your encryption material, which covers the PR.AA and PR.DS functions that matter most for regulated industries. Skip this if your threat model centers on detecting account compromise rather than preventing lateral movement of sensitive emails; StealthMail is a content-control tool, not a mailbox forensics platform.