# StealthMail vs Zivver Secure Email Gateway: side-by-side comparison (2026)

[StealthMail](https://cybersectools.com/tools/stealthmail) is a commercial [email encryption](https://cybersectools.com/categories/email-encryption) solution by [StealthMail](https://cybersectools.com/companies/stealthmail). [Zivver Secure Email Gateway](https://cybersectools.com/tools/zivver-secure-email-gateway) is a commercial [email encryption](https://cybersectools.com/categories/email-encryption) solution by [Zivver](https://cybersectools.com/companies/zivver). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | StealthMail | Zivver Secure Email Gateway |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | Email Encryption | Email Encryption |
| Verified | No | No |
| Deployment type | Hybrid | Hybrid |
| Company size fit | Mid-Market, Enterprise | SMB, Mid-Market, Enterprise |
| Company | StealthMail | Zivver |
| Headquarters | – | – |

### Use cases and capabilities

| | StealthMail | Zivver Secure Email Gateway |
|---|---|---|
| Encryption | Yes | Yes |
| Gateway | – | Yes |

### Core features

**StealthMail**

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

**Zivver Secure Email Gateway**

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

### Integrations

**StealthMail**

No integrations listed.

**Zivver Secure Email Gateway**

3 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.

- [Zivver Secure Email Gateway](https://cybersectools.com/tools/zivver-secure-email-gateway) fits if you are a small business.

## StealthMail vs Zivver Secure Email Gateway FAQ

Common questions when comparing StealthMail vs Zivver Secure Email Gateway for email encryption.

### What is the difference between StealthMail and Zivver Secure Email Gateway?

**StealthMail**: Enterprise email security via encrypted stealth-links, bypassing SMTP vulnerabilities, built by StealthMail.

**Zivver Secure Email Gateway**: Secure email gateway with automated DLP and zero-knowledge encryption, built by Zivver.

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

### Who makes StealthMail and Zivver Secure Email Gateway?

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

### Is StealthMail a good alternative to Zivver Secure Email Gateway?

Often, yes. StealthMail and Zivver 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

- [StealthMail vs Z1 SecureMail Gateway](https://cybersectools.com/compare/stealthmail-vs-zertificon-z1-solutions)
- [StealthMail vs Beyond Encryption Mailock Enterprise](https://cybersectools.com/compare/beyond-encryption-mailock-enterprise-vs-stealthmail)
- [StealthMail vs PreVeil Security](https://cybersectools.com/compare/preveil-security-vs-stealthmail)
- [Zivver Secure Email Gateway vs Z1 SecureMail Gateway](https://cybersectools.com/compare/zertificon-z1-solutions-vs-zivver-secure-email-gateway)
- [Zivver Secure Email Gateway vs Beyond Encryption Mailock Enterprise](https://cybersectools.com/compare/beyond-encryption-mailock-enterprise-vs-zivver-secure-email-gateway)
- [Zivver Secure Email Gateway vs PreVeil Security](https://cybersectools.com/compare/preveil-security-vs-zivver-secure-email-gateway)

## Alternatives to each

- [See all StealthMail alternatives](https://cybersectools.com/alternatives/stealthmail)
- [See all Zivver Secure Email Gateway alternatives](https://cybersectools.com/alternatives/zivver-secure-email-gateway)

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Source: https://cybersectools.com/compare/stealthmail-vs-zivver-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/stealthmail.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md.

More on StealthMail and Zivver 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