DigiCert Secure Email (S/MIME) Certs vs Z1 SecureMail Gateway: Side-by-Side Comparison (2026)

DigiCert Secure Email (S/MIME) Certs: S/MIME certificates for end-to-end email encryption and signing. built by DigiCert. Core capabilities include End-to-end email encryption using S/MIME, Digital message signing with public/private key pairs, Automated certificate request and delivery..

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.

DigiCert Secure Email (S/MIME) Certs differentiates with End-to-end email encryption using S/MIME, Digital message signing with public/private key pairs, Automated certificate request and delivery. 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®.

DigiCert Secure Email (S/MIME) Certs is developed by DigiCert. 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.

DigiCert Secure Email (S/MIME) Certs integrates with Gmail, Yahoo Mail, Microsoft Outlook, Apple Mail. 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.

DigiCert Secure Email (S/MIME) Certs and Z1 SecureMail Gateway serve similar Email Encryption use cases: both are Email Encryption tools, both cover Encryption, SMTP. Review the feature comparison above to determine which fits your requirements.