# Graphus vs GreatHorn Mailbox Intelligence: side-by-side comparison (2026)

[Graphus](https://cybersectools.com/tools/graphus) is a commercial [Anti-Phishing](https://cybersectools.com/categories/anti-phishing) solution by [Graphus](https://cybersectools.com/companies/graphus). [GreatHorn Mailbox Intelligence](https://cybersectools.com/tools/greathorn-mailbox-intelligence) is a commercial [Anti-Phishing](https://cybersectools.com/categories/anti-phishing) solution by [GreatHorn](https://cybersectools.com/companies/greathorn). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | Graphus | GreatHorn Mailbox Intelligence |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | Anti-Phishing | Anti-Phishing |
| Verified | No | No |
| Deployment type | Cloud | Cloud |
| Company size fit | SMB, Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise |
| Company | Graphus | GreatHorn |
| Headquarters | – | – |

### Use cases and capabilities

| | Graphus | GreatHorn Mailbox Intelligence |
|---|---|---|
| Spam Prevention | Yes | – |
| DMARC | Yes | – |
| Fraud Detection | Yes | – |
| Microsoft 365 | – | Yes |

### Core features

**Graphus**

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

**GreatHorn Mailbox Intelligence**

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

### Integrations

**Graphus**

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

**GreatHorn Mailbox Intelligence**

2 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.

- [GreatHorn Mailbox Intelligence](https://cybersectools.com/tools/greathorn-mailbox-intelligence) fits if you are a startup.

## Graphus vs GreatHorn Mailbox Intelligence FAQ

Common questions when comparing Graphus vs GreatHorn Mailbox Intelligence for Anti-Phishing.

### What is the difference between Graphus and GreatHorn Mailbox Intelligence?

**Graphus**: Cloud email security platform focused on anti-phishing protection for orgs, built by Graphus.

**GreatHorn Mailbox Intelligence**: Email security tool empowering users to identify & report phishing threats, built by GreatHorn.

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

### Who makes Graphus and GreatHorn Mailbox Intelligence?

**Graphus** is made by Graphus. **GreatHorn Mailbox Intelligence** is made by GreatHorn. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is Graphus a good alternative to GreatHorn Mailbox Intelligence?

Often, yes. Graphus and GreatHorn Mailbox Intelligence are both Anti-Phishing products. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Graphus vs Vade for M365](https://cybersectools.com/compare/graphus-vs-vade-for-m365)
- [Graphus vs Detect-Phish](https://cybersectools.com/compare/detect-phish-vs-graphus)
- [Graphus vs Egress Defend](https://cybersectools.com/compare/egress-defend-vs-graphus)
- [GreatHorn Mailbox Intelligence vs Vade for M365](https://cybersectools.com/compare/greathorn-mailbox-intelligence-vs-vade-for-m365)
- [GreatHorn Mailbox Intelligence vs Detect-Phish](https://cybersectools.com/compare/detect-phish-vs-greathorn-mailbox-intelligence)
- [GreatHorn Mailbox Intelligence vs Egress Defend](https://cybersectools.com/compare/egress-defend-vs-greathorn-mailbox-intelligence)

## Alternatives to each

- [See all Graphus alternatives](https://cybersectools.com/alternatives/graphus)
- [See all GreatHorn Mailbox Intelligence alternatives](https://cybersectools.com/alternatives/greathorn-mailbox-intelligence)

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Source: https://cybersectools.com/compare/graphus-vs-greathorn-mailbox-intelligence

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

More on Graphus and GreatHorn Mailbox Intelligence: 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