How many alternatives to Z1 SecureMail Gateway are available?

There are 38 alternatives to Z1 SecureMail Gateway listed on CybersecTools, all within the Email Encryption category. Each alternative is matched based on shared capabilities, tags, and NIST CSF coverage areas.

Is Z1 SecureMail Gateway free or commercial?

Z1 SecureMail Gateway is a commercial Email Encryption tool. It requires a paid license or subscription. Both free and commercial alternatives are available for comparison.

What type of tool is Z1 SecureMail Gateway?

Z1 SecureMail Gateway is a Email Encryption tool within the broader Email & Messaging Security category. It is used by security professionals for email encryption capabilities and can be compared against 38 similar tools.

38 Best Z1 SecureMail Gateway Alternatives & Competitors (2026)

Top Z1 SecureMail Gateway Alternatives and Competitors at a Glance

A closer look at the 8 most relevant alternatives and competitors to Z1 SecureMail Gateway, including their key features and shared capabilities.

LuxSci

Commercial

Email Encryption

HIPAA-compliant email, marketing, and forms platform for healthcare orgs.

Key features: HIPAA-compliant email sending at high volume, SecureLine™ email encryption for any recipient, Secure email gateway for Microsoft 365 and Google Workspace, PHI-powered email personalization and hypersegmentation, HIPAA-compliant email marketing campaigns

Shares 5 capabilities with Z1 SecureMail Gateway: Encryption, Microsoft 365, SMTP, GDPR +1 more

View LuxSci|LuxSci alternatives|Compare LuxSci

Beyond Encryption Mailock Enterprise

Commercial

Email Encryption

Enterprise secure email gateway with AES-256 encryption & recipient auth.

Key features: AES-256 end-to-end email and attachment encryption, Recipient identity authentication challenges (SMS, Q&A, email verification, Unipass ID), Trigger-word detection to prompt secure sending, Outlook add-in for encryption initiation, Rule-based and automated encryption configuration

View Beyond Encryption Mailock Enterprise|Beyond Encryption Mailock Enterprise alternatives|Compare Beyond Encryption Mailock Enterprise

Intermedia Email Encryption

Commercial

Email Encryption

Cloud-based email encryption service using PKI, S/MIME & X.509 for orgs.

Key features: End-to-end encrypted email delivery using PKI, S/MIME, and X.509 certificates, Automatic background email scanning without additional software or plugins, Pre-built HIPAA templates for identifying Protected Health Information (PHI), Multiple encryption authentication options: Self-Registration, Shared Secret Passphrase, Social Media Credentials, and 2FA, Full encryption key and certificate management (expiry, rollover, bulk upload)

View Intermedia Email Encryption|Intermedia Email Encryption alternatives|Compare Intermedia Email Encryption

PreVeil Email

Commercial

Email Encryption

E2E encrypted email for regulated industries handling CUI and ITAR data.

Key features: End-to-end encrypted email with zero-knowledge architecture (PreVeil cannot access user data), Works with existing email addresses without infrastructure changes, Encrypted inbox added to existing email clients (Outlook, Gmail, Apple Mail), Zero-trust architecture protecting against phishing, server breaches, admin vulnerabilities, and password attacks, Compliance support for CMMC, NIST 800-171, ITAR, DFARS, HIPAA, CJIS, and PCI DSS (FIPS 140-3 validated, FedRAMP authorized)

View PreVeil Email|PreVeil Email alternatives|Compare PreVeil Email

Egress Protect

Commercial

Email Encryption

End-to-end email encryption with DLP and access controls for Microsoft 365

Key features: 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, Post-send message revocation and access management, Large file transfer with encryption bypassing email size limits

View Egress Protect|Egress Protect alternatives|Compare Egress Protect

INKY Email Encryption

Commercial

Email Encryption

Email encryption solution for securing sensitive data in email communications

Key features: Email encryption for sensitive data protection, Integration with behavioral email security platform, Multi-tenancy support for MSPs/MSSPs, User-friendly encryption interface, Data leak prevention

View INKY Email Encryption|INKY Email Encryption alternatives|Compare INKY Email Encryption

Zivver Secure Email Gateway

Commercial

Email Encryption

Secure email gateway with automated DLP and zero-knowledge encryption

Key features: Automated sensitive data detection in outbound emails, Zero-knowledge encryption for all outgoing emails, Rule-based security policy enforcement, Silent DLP scanning without user intervention, Incorrect recipient detection

View Zivver Secure Email Gateway|Zivver Secure Email Gateway alternatives|Compare Zivver Secure Email Gateway

Beyond Encryption Mailock for M365

Commercial

Email Encryption

AES-256 encrypted email add-on for M365 with auth & revocation.

Key features: AES-256 end-to-end email encryption, Recipient identity verification via SMS, Q&A, or Unipass ID, Message revocation after send (including post-open), Timestamped audit trails for opens, replies, and downloads, Read notifications and engagement analytics

View Beyond Encryption Mailock for M365|Beyond Encryption Mailock for M365 alternatives|Compare Beyond Encryption Mailock for M365

The most popular alternatives to Z1 SecureMail Gateway include LuxSci, Beyond Encryption Mailock Enterprise, Intermedia Email Encryption, PreVeil Email, and Egress Protect. These Email Encryption tools offer similar capabilities and are frequently compared by security professionals evaluating their options.

Best Z1 SecureMail Gateway Alternatives & Competitors in 2026

Z1 SecureMail Gateway Alternatives and Competitors

Top Z1 SecureMail Gateway Alternatives and Competitors at a Glance

All 38 Alternatives & Competitors to Z1 SecureMail Gateway

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