Egress Protect vs Z1 SecureMail Gateway: Side-by-Side Comparison (2026)

Egress Protect: End-to-end email encryption with DLP and access controls for Microsoft 365. built by Egress. 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..

Z1 SecureMail Gateway: Enterprise email encryption gateway supporting S/MIME, PGP, and digital signing. built by Zertificon Solutions GmbH. Core capabilities include S/MIME and PGP email encryption at the gateway level, Digital email signing for authenticity and integrity, Automated certificate management via CertMagic®..

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

Egress Protect differentiates with 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. Z1 SecureMail Gateway differentiates with S/MIME and PGP email encryption at the gateway level, Digital email signing for authenticity and integrity, Automated certificate management via CertMagic®.

Egress Protect is developed by Egress. Z1 SecureMail Gateway is developed by Zertificon Solutions GmbH. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

Egress Protect integrates with Microsoft 365, Microsoft Office 365, Outlook, Outlook Web Access, Microsoft Purview Information Protection and 3 more. Z1 SecureMail Gateway integrates with Microsoft Azure, Microsoft 365, Google Cloud, Google Workspace, Z1 Global TrustPoint and 1 more. Check integration compatibility with your existing security stack before deciding.

Egress Protect and Z1 SecureMail Gateway serve similar Email Encryption use cases: both are Email Encryption tools, both cover Encryption, Microsoft 365. Review the feature comparison above to determine which fits your requirements.