# Paubox Email Encryption vs Z1 SecureMail Gateway: side-by-side comparison (2026)

[Paubox Email Encryption](https://cybersectools.com/tools/paubox-email-encryption) is a commercial [email encryption](https://cybersectools.com/categories/email-encryption) solution by [Paubox](https://cybersectools.com/companies/paubox). [Z1 SecureMail Gateway](https://cybersectools.com/tools/zertificon-z1-solutions) is a commercial [email encryption](https://cybersectools.com/categories/email-encryption) solution by [Zertificon Solutions GmbH](https://cybersectools.com/companies/zertificon-solutions-gmbh). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | Paubox Email Encryption | Z1 SecureMail Gateway |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | Email Encryption | Email Encryption |
| Verified | No | Verified |
| Deployment type | Cloud | Hybrid |
| Company size fit | Startup, SMB, Mid-Market, Enterprise | Mid-Market, Enterprise, SMB, Startup |
| Company | Paubox | Zertificon Solutions GmbH |
| Headquarters | – | – |

### Use cases and capabilities

| | Paubox Email Encryption | Z1 SecureMail Gateway |
|---|---|---|
| Healthcare | Yes | Yes |
| TLS | Yes | Yes |
| Encryption | – | Yes |
| Gateway | – | Yes |
| GDPR | – | Yes |
| SMTP | – | Yes |
| Microsoft 365 | – | Yes |
| Supply Chain Security | – | Yes |
| DKIM | – | Yes |
| DMARC | – | Yes |

### Core features

**Paubox Email Encryption**

8 features listed. Sign in on the page to see them.

**Z1 SecureMail Gateway**

- 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

**Paubox Email Encryption**

5 integrations listed. Sign in on the page to see them.

**Z1 SecureMail Gateway**

- Microsoft Azure
- Microsoft 365
- Google Cloud
- Google Workspace
- Z1 Global TrustPoint
- SwissSign

## Which one fits you

Based on what each listing shows: deployment, company size, price and open source.

- [Paubox Email Encryption](https://cybersectools.com/tools/paubox-email-encryption) fits if you want a cloud product.
- [Z1 SecureMail Gateway](https://cybersectools.com/tools/zertificon-z1-solutions) fits if you need both cloud and on-premises options.

## Paubox Email Encryption vs Z1 SecureMail Gateway FAQ

Common questions when comparing Paubox Email Encryption vs Z1 SecureMail Gateway for email encryption.

### What is the difference between Paubox Email Encryption and Z1 SecureMail Gateway?

**Paubox Email Encryption**: HIPAA-compliant email encryption for Google Workspace and Microsoft 365. Built by Paubox.

**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.

### Who makes Paubox Email Encryption and Z1 SecureMail Gateway?

**Paubox Email Encryption** is made by Paubox. **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.

### Is Paubox Email Encryption a good alternative to Z1 SecureMail Gateway?

Often, yes. Paubox Email Encryption and Z1 SecureMail Gateway are both Email Encryption products, and both cover Healthcare, TLS. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Paubox Email Encryption vs LuxSci](https://cybersectools.com/compare/luxsci-vs-paubox-email-encryption)
- [Paubox Email Encryption vs SEPPmail Secure Email Gateway](https://cybersectools.com/compare/paubox-email-encryption-vs-seppmail-secure-email-gateway)
- [Paubox Email Encryption vs Beyond Encryption Mailock Enterprise](https://cybersectools.com/compare/beyond-encryption-mailock-enterprise-vs-paubox-email-encryption)
- [Z1 SecureMail Gateway vs LuxSci](https://cybersectools.com/compare/luxsci-vs-zertificon-z1-solutions)
- [Z1 SecureMail Gateway vs SEPPmail Secure Email Gateway](https://cybersectools.com/compare/seppmail-secure-email-gateway-vs-zertificon-z1-solutions)
- [Z1 SecureMail Gateway vs Beyond Encryption Mailock Enterprise](https://cybersectools.com/compare/beyond-encryption-mailock-enterprise-vs-zertificon-z1-solutions)

## Alternatives to each

- [See all Paubox Email Encryption alternatives](https://cybersectools.com/alternatives/paubox-email-encryption)
- [See all Z1 SecureMail Gateway alternatives](https://cybersectools.com/alternatives/zertificon-z1-solutions)

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Source: https://cybersectools.com/compare/paubox-email-encryption-vs-zertificon-z1-solutions

For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/paubox-email-encryption.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md.

More on Paubox Email Encryption and Z1 SecureMail Gateway: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=compare-md