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StealthMail is a commercial email encryption tool by StealthMail. Egress Protect is a commercial email encryption tool by Egress. Compare features, ratings, integrations, and community reviews side by side to find the best email encryption fit for your security stack.
CST VerdictBased on our analysis of NIST CSF 2.0 coverage, core features, integrations, company size fit, here is our conclusion:
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.
Mid-market and enterprise teams protecting sensitive data in Microsoft 365 should choose Egress Protect for its post-send message control, which lets you revoke access and restrict forwarding even after recipients open encrypted email. The tool covers three NIST CSF 2.0 functions (PR.DS, PR.AA, DE.CM), with particular strength in access enforcement through granular controls and continuous audit trails that satisfy compliance auditors. Skip this if you need unified DLP across cloud storage, web, and endpoints; Egress Protect is email-centric and won't replace a platform-wide data loss prevention strategy.
Enterprise email security via encrypted stealth-links, bypassing SMTP vulnerabilities.
End-to-end email encryption with DLP and access controls for Microsoft 365
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Common questions about comparing StealthMail vs Egress Protect for your email encryption needs.
StealthMail: Enterprise email security via encrypted stealth-links, bypassing SMTP vulnerabilities. built by StealthMail. headquartered in United States. Core capabilities include End-to-end email encryption using Stealth-Links instead of direct content transmission, User-owned encryption key management (ECC 512+ bit), Role-based access controls for managing user permissions..
Egress Protect: End-to-end email encryption with DLP and access controls for Microsoft 365. built by Egress. headquartered in United Kingdom. Core capabilities include End-to-end email encryption with 256-bit AES, Automatic and sender-initiated encryption based on policies, Granular access controls to restrict forwarding, printing, copying, and downloading..
Both serve the Email Encryption market but differ in approach, feature depth, and target audience.
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