# CloudMask Secure Gmail vs SEPPmail Secure Email Gateway: side-by-side comparison (2026)

[CloudMask Secure Gmail](https://cybersectools.com/tools/cloudmask-secure-gmail) is a commercial [email encryption](https://cybersectools.com/categories/email-encryption) solution by [CloudMask](https://cybersectools.com/companies/cloudmask). [SEPPmail Secure Email Gateway](https://cybersectools.com/tools/seppmail-secure-email-gateway) is a commercial [email encryption](https://cybersectools.com/categories/email-encryption) solution by [SEPPmail AG](https://cybersectools.com/companies/seppmail-ag). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | CloudMask Secure Gmail | SEPPmail Secure Email Gateway |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | Email Encryption | Email Encryption |
| Verified | No | No |
| Deployment type | Cloud | On-Premises |
| Company size fit | Startup, SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise |
| Company | CloudMask | SEPPmail AG |
| Headquarters | – | – |

### Use cases and capabilities

| | CloudMask Secure Gmail | SEPPmail Secure Email Gateway |
|---|---|---|
| Encryption | Yes | Yes |
| Secure Development | Yes | – |
| GCP | Yes | – |
| Gateway | – | Yes |
| SMTP | – | Yes |
| GDPR | – | Yes |
| DKIM | – | Yes |
| SPF | – | Yes |
| DMARC | – | Yes |
| TLS | – | Yes |
| PII | – | Yes |
| Security Compliance Training | – | Yes |

### Core features

**CloudMask Secure Gmail**

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

**SEPPmail Secure Email Gateway**

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

### Integrations

**CloudMask Secure Gmail**

1 integration listed. Sign in on the page to see them.

**SEPPmail Secure Email Gateway**

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

## Which one fits you

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

- [CloudMask Secure Gmail](https://cybersectools.com/tools/cloudmask-secure-gmail) fits if you want a cloud product and you are a startup.
- [SEPPmail Secure Email Gateway](https://cybersectools.com/tools/seppmail-secure-email-gateway) fits if you need to run it on your own servers.

## CloudMask Secure Gmail vs SEPPmail Secure Email Gateway FAQ

Common questions when comparing CloudMask Secure Gmail vs SEPPmail Secure Email Gateway for email encryption.

### What is the difference between CloudMask Secure Gmail and SEPPmail Secure Email Gateway?

**CloudMask Secure Gmail**: End-to-end Gmail encryption with user-controlled keys and trusted contacts, built by CloudMask.

**SEPPmail Secure Email Gateway**: Built by SEPPmail AG.

The table above shows where their features, integrations, deployment and company size fit differ.

### Who makes CloudMask Secure Gmail and SEPPmail Secure Email Gateway?

**CloudMask Secure Gmail** is made by CloudMask. **SEPPmail Secure Email Gateway** is made by SEPPmail AG. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is CloudMask Secure Gmail a good alternative to SEPPmail Secure Email Gateway?

Often, yes. CloudMask Secure Gmail and SEPPmail Secure Email Gateway are both Email Encryption products, and both cover Encryption. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [CloudMask Secure Gmail vs Z1 SecureMail Gateway](https://cybersectools.com/compare/cloudmask-secure-gmail-vs-zertificon-z1-solutions)
- [CloudMask Secure Gmail vs LuxSci](https://cybersectools.com/compare/cloudmask-secure-gmail-vs-luxsci)
- [CloudMask Secure Gmail vs TitanHQ EncryptTitan](https://cybersectools.com/compare/cloudmask-secure-gmail-vs-titanhq-encrypttitan)
- [SEPPmail Secure Email Gateway vs Z1 SecureMail Gateway](https://cybersectools.com/compare/seppmail-secure-email-gateway-vs-zertificon-z1-solutions)
- [SEPPmail Secure Email Gateway vs LuxSci](https://cybersectools.com/compare/luxsci-vs-seppmail-secure-email-gateway)
- [SEPPmail Secure Email Gateway vs TitanHQ EncryptTitan](https://cybersectools.com/compare/seppmail-secure-email-gateway-vs-titanhq-encrypttitan)

## Alternatives to each

- [See all CloudMask Secure Gmail alternatives](https://cybersectools.com/alternatives/cloudmask-secure-gmail)
- [See all SEPPmail Secure Email Gateway alternatives](https://cybersectools.com/alternatives/seppmail-secure-email-gateway)

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Source: https://cybersectools.com/compare/cloudmask-secure-gmail-vs-seppmail-secure-email-gateway

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

More on CloudMask Secure Gmail and SEPPmail Secure Email 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