# Cloudmark Authority vs Hornetsecurity: side-by-side comparison (2026)

[Cloudmark Authority](https://cybersectools.com/tools/cloudmark-authority) is a commercial [email security platforms](https://cybersectools.com/categories/email-security-platforms) solution by [Cloudmark](https://cybersectools.com/companies/cloudmark). [Hornetsecurity](https://cybersectools.com/tools/hornetsecurity) is a commercial [email security platforms](https://cybersectools.com/categories/email-security-platforms) solution by [Hornetsecurity](https://cybersectools.com/companies/hornetsecurity). Features, integrations, deployment and the company behind each one, side by side.

Need the answer fast? [Best Email Security Solutions for Business](https://cybersectools.com/shortlists/best-email-security-platforms) picks Proofpoint Core Email Protection, Microsoft Defender for Office 365, Mimecast Advanced Email Security and 4 more.

## Side-by-side comparison

| | Cloudmark Authority | Hornetsecurity |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | Email Security Platforms | Email Security Platforms |
| Verified | No | No |
| Deployment type | On-Premises | Cloud |
| Company size fit | Enterprise | SMB, Mid-Market, Enterprise |
| Company | Cloudmark | Hornetsecurity |
| Headquarters | – | – |

### Use cases and capabilities

| | Cloudmark Authority | Hornetsecurity |
|---|---|---|
| Spam Prevention | Yes | Yes |
| Microsoft 365 | – | Yes |
| Office 365 | – | Yes |
| Microsoft | – | Yes |
| Multi Tenancy | – | Yes |

### Core features

**Cloudmark Authority**

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

**Hornetsecurity**

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

### Integrations

**Cloudmark Authority**

No integrations listed.

**Hornetsecurity**

1 integration 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.

- [Cloudmark Authority](https://cybersectools.com/tools/cloudmark-authority) fits if you need to run it on your own servers.
- [Hornetsecurity](https://cybersectools.com/tools/hornetsecurity) fits if you want a cloud product and you are a small business or a mid-market company.

## Cloudmark Authority vs Hornetsecurity FAQ

Common questions when comparing Cloudmark Authority vs Hornetsecurity for email security platforms.

### What is the difference between Cloudmark Authority and Hornetsecurity?

**Cloudmark Authority**: Carrier-grade email security for ISPs blocking spam, phishing, and malware. Built by Cloudmark.

**Hornetsecurity**: Cloud security platform for M365 covering email, backup, and awareness. Built by Hornetsecurity.

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

### Who makes Cloudmark Authority and Hornetsecurity?

**Cloudmark Authority** is made by Cloudmark. **Hornetsecurity** is made by Hornetsecurity. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is Cloudmark Authority a good alternative to Hornetsecurity?

Often, yes. Cloudmark Authority and Hornetsecurity are both Email Security Platforms products, and both cover Spam Prevention. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Cloudmark Authority vs SpamTitan for Office 365](https://cybersectools.com/compare/cloudmark-authority-vs-spamtitan-for-office-365)
- [Cloudmark Authority vs Vircom Email Security](https://cybersectools.com/compare/cloudmark-authority-vs-vircom-email-security)
- [Cloudmark Authority vs ID Agent Graphus](https://cybersectools.com/compare/cloudmark-authority-vs-id-agent-graphus)
- [Hornetsecurity vs SpamTitan for Office 365](https://cybersectools.com/compare/hornetsecurity-vs-spamtitan-for-office-365)
- [Hornetsecurity vs Vircom Email Security](https://cybersectools.com/compare/hornetsecurity-vs-vircom-email-security)
- [Hornetsecurity vs ID Agent Graphus](https://cybersectools.com/compare/hornetsecurity-vs-id-agent-graphus)

## Alternatives to each

- [See all Cloudmark Authority alternatives](https://cybersectools.com/alternatives/cloudmark-authority)
- [See all Hornetsecurity alternatives](https://cybersectools.com/alternatives/hornetsecurity)

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Source: https://cybersectools.com/compare/cloudmark-authority-vs-hornetsecurity

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

More on Cloudmark Authority and Hornetsecurity: 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