CloudMask End-to-End Encryption is a commercial email encryption solution by CloudMask. 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.
E2EE solution for emails, files & SaaS apps with user-held encryption keys.
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.
CloudMask End-to-End 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 or a small business.
Common questions when comparing CloudMask End-to-End Encryption vs Z1 SecureMail Gateway for email encryption.
CloudMask End-to-End Encryption: E2EE solution for emails, files & SaaS apps with user-held encryption keys, built by CloudMask.
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.
CloudMask End-to-End Encryption is made by CloudMask. 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. CloudMask End-to-End Encryption and Z1 SecureMail Gateway are both Email Encryption products, and both cover Encryption. Use the table above to see where features, deployment and company size fit differ.
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Updated 2026-11-01
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