The product
by StealthMail
Enterprise email security via encrypted stealth-links, bypassing SMTP vulnerabilities.
The closest StealthMail alternatives are Z1 SecureMail Gateway, Beyond Encryption Mailock Enterprise and PreVeil Security. Picking a StealthMail alternative comes down to fit: Email Encryption coverage, your environment, your integrations and your budget. So each option below shows what it covers, how it deploys, its pricing model and the company behind it.
39 alternativesClosest matches: Z1 SecureMail Gateway, Beyond Encryption Mailock Enterprise, PreVeil SecurityPage updated Nov 2026
The product
by StealthMail
Enterprise email security via encrypted stealth-links, bypassing SMTP vulnerabilities.
StealthMail is a commercial Email Encryption solution made by StealthMail. The closest matches by shared tags and NIST CSF 2.0 coverage are Z1 SecureMail Gateway, Beyond Encryption Mailock Enterprise, PreVeil Security, Egress Protect, and Zivver Secure Email Gateway. All 39 alternatives on this page are ranked the same way.
These 8 solutions overlap most with StealthMail. Each row says what the product does and, when the overlap is big enough, which capabilities it shares.
Enterprise email encryption gateway supporting S/MIME, OpenPGP, and digital signing.
Key features: Digital email signing for authenticity and integrity, Automated certificate management via CertMagic®, Inter-organizational encrypted email exchange via GlobalCrypt®, Cloud deployment support for Azure/M365 and Google Cloud/Workspace, Centralized server-side encryption transparent to end users
View Z1 SecureMail GatewayZ1 SecureMail Gateway alternativesStealthMail vs Z1 SecureMail Gateway
Enterprise secure email gateway with AES-256 encryption & recipient auth.
Key features: 8 listed. See them on the Beyond Encryption Mailock Enterprise page.
View Beyond Encryption Mailock EnterpriseBeyond Encryption Mailock Enterprise alternativesStealthMail vs Beyond Encryption Mailock Enterprise
End-to-end encrypted email & file sharing with zero-trust architecture.
Key features: 8 listed. See them on the PreVeil Security page.
View PreVeil SecurityPreVeil Security alternativesStealthMail vs PreVeil Security
End-to-end email encryption with DLP and access controls for Microsoft 365
Key features: 10 listed. See them on the Egress Protect page.
View Egress ProtectEgress Protect alternativesStealthMail vs Egress Protect
Secure email gateway with automated DLP and zero-knowledge encryption
Key features: 10 listed. See them on the Zivver Secure Email Gateway page.
View Zivver Secure Email GatewayZivver Secure Email Gateway alternativesStealthMail vs Zivver Secure Email Gateway
Encrypted email platform with recipient verification, tracking, and revocation.
Key features: 6 listed. See them on the Beyond Encryption Mailock® Secure Email page.
View Beyond Encryption Mailock® Secure EmailBeyond Encryption Mailock® Secure Email alternativesStealthMail vs Beyond Encryption Mailock® Secure Email
Outlook add-in for end-to-end email encryption with recipient auth & revoke.
Key features: 7 listed. See them on the Beyond Encryption Mailock for Outlook page.
View Beyond Encryption Mailock for OutlookBeyond Encryption Mailock for Outlook alternativesStealthMail vs Beyond Encryption Mailock for Outlook
AES-256 encrypted email add-on for M365 with auth & revocation.
Key features: 10 listed. See them on the Beyond Encryption Mailock for M365 page.
View Beyond Encryption Mailock for M365Beyond Encryption Mailock for M365 alternativesStealthMail vs Beyond Encryption Mailock for M365
Enterprise email encryption gateway supporting S/MIME, OpenPGP, and digital signing.
Enterprise secure email gateway with AES-256 encryption & recipient auth.
End-to-end encrypted email & file sharing with zero-trust architecture.
End-to-end email encryption with DLP and access controls for Microsoft 365
Secure email gateway with automated DLP and zero-knowledge encryption
Encrypted email platform with recipient verification, tracking, and revocation.
Outlook add-in for end-to-end email encryption with recipient auth & revoke.
AES-256 encrypted email add-on for M365 with auth & revocation.
E2EE solution for emails, files & SaaS apps with user-held encryption keys.
S/MIME certificates for end-to-end email encryption and signing.
Cloud-based email encryption service using PKI, S/MIME & X.509 for orgs.
Enterprise admin module for encrypted email & file sharing with E-discovery controls.
E2E encrypted email for regulated industries handling CUI and ITAR data.
Transparent email and attachment encryption for corporate messaging via Outlook
Email encryption solution for secure information exchange via email
Secure email platform with encryption, DLP, and policy automation
Email encryption solution for securing sensitive data in email communications
Email encryption software using FIPS 140-2 compliant modules and RSA keys
End-to-end email encryption for Gmail and Outlook with access controls
Automated email & SaaS encryption gateway with DLP rules & access controls
Email encryption solution with access control, tracking, and revocation
Email encryption service with automated delivery and compliance tracking
End-to-end email encryption solution with centralized policy management
Automated bulk secure email encryption & delivery for enterprise orgs.
End-to-end Gmail encryption with user-controlled keys and trusted contacts.
E2E encryption for healthcare emails, files & apps protecting ePHI/PII.
E2EE solution for education covering emails, files, and apps.
White-label branding layer for Echoworx's email encryption platform.
Email encryption solution for secure organizational communications.
Email client plugin that encrypts file attachments into .cake format before sending.
Secure email solution for recruiters to encrypt and share sensitive candidate data
AI-powered email encryption solution for compliance with HIPAA, FINRA, FERPA
End-to-end email encryption for Gmail with granular access controls
Encryption and data privacy solution for Google Workspace applications
Cloud-based email encryption with automated DLP policies and delivery methods
HIPAA-compliant email encryption for Google Workspace and Microsoft 365
Common questions when weighing alternatives to StealthMail.
The closest matches to StealthMail by shared tags and NIST CSF 2.0 coverage are Z1 SecureMail Gateway, Beyond Encryption Mailock Enterprise, PreVeil Security, Egress Protect, and Zivver Secure Email Gateway. All of them are Email Encryption products.
This page shows 39 alternatives to StealthMail, all in the Email Encryption category. Each one is matched on shared tags and NIST CSF 2.0 areas, and the closest matches rank first.
StealthMail is a commercial Email Encryption product. It needs a paid license or subscription. Only commercial alternatives are listed here. Free and open source products are under /free.
StealthMail is a Email Encryption product in the Email & Messaging Security category. You can compare it with the 39 other Email Encryption products on this page.
No Email Encryption shortlist yet. This is the closest one.
Updated 2026-11-01
See the shortlist
