Galaxkey Email Encryption Software vs Z1 SecureMail Gateway: side-by-side comparison (2026)
Galaxkey Email Encryption Software is a commercial email encryption solution by GALAXKEY. 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.
Email encryption software using FIPS 140-2 compliant modules and RSA keys
Enterprise email encryption gateway supporting S/MIME, OpenPGP, and digital signing.
Side-by-side comparison
Feature
Galaxkey Email Encryption Software
Z1 SecureMail Gateway
Pricing model
Commercial
Commercial
Category
Email Encryption
Email Encryption
Deployment and fit
Deployment type
Hybrid
Hybrid
Company size fit
Startup, SMB, Mid-Market, Enterprise
Mid-Market, Enterprise, SMB, Startup
Company
Company
GALAXKEY
Zertificon Solutions GmbH
Use cases and capabilities
Encryption
Yes
Yes
Gateway
No
Yes
GDPR
No
Yes
SMTP
No
Yes
Microsoft 365
No
Yes
Supply Chain Security
No
Yes
Healthcare
No
Yes
DKIM
No
Yes
TLS
No
Yes
DMARC
No
Yes
Core features
6 features listed
- Digital email signing for authenticity and integrity
- Automated certificate management via CertMagic®
- Inter-organizational encrypted email exchange via GlobalCrypt®
- Cloud deployment support for Azure/M365 and Google Cloud/Workspace
- Centralized server-side encryption transparent to end users
- GDPR-compliant secure data exchange
- EU NIS2 Directive compliance support
- Secure large file transfer capability
Integrations
3 integrations listed
Microsoft Azure
Microsoft 365
Google Cloud
Google Workspace
Z1 Global TrustPoint
SwissSign
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