Virtru Gmail Encryption is a commercial email encryption solution by Virtru. Z1 SecureMail Gateway is a commercial email encryption solution by Zertificon Solutions GmbH. Features, integrations, deployment and the company behind each one, side by side.
End-to-end email encryption for Gmail with granular access controls
Enterprise email encryption gateway supporting S/MIME, OpenPGP, and digital signing.
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Based on what each listing shows: deployment, company size, price and open source.
Virtru Gmail Encryption fits if you want a cloud product.
Z1 SecureMail Gateway fits if you need both cloud and on-premises options and you are a startup.
Common questions when comparing Virtru Gmail Encryption vs Z1 SecureMail Gateway for email encryption.
Virtru Gmail Encryption: End-to-end email encryption for Gmail with granular access controls. Built by Virtru.
Z1 SecureMail Gateway: Enterprise email encryption gateway supporting S/MIME, OpenPGP, and digital signing. Built by Zertificon Solutions GmbH. Core capabilities include Digital email signing for authenticity and integrity, Automated certificate management via CertMagic®, Inter-organizational encrypted email exchange via GlobalCrypt®.
The table above shows where their features, integrations, deployment and company size fit differ.
Virtru Gmail Encryption is made by Virtru. Z1 SecureMail Gateway is made by Zertificon Solutions GmbH. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.
Often, yes. Virtru Gmail Encryption and Z1 SecureMail Gateway are both Email Encryption products. Use the table above to see where features, deployment and company size fit differ.
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Updated 2026-11-02
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