# Egress Defend vs PhishingBox KillPhish: side-by-side comparison (2026)

[Egress Defend](https://cybersectools.com/tools/egress-defend) is a commercial [anti-phishing](https://cybersectools.com/categories/anti-phishing) solution by [KnowBe4](https://cybersectools.com/companies/knowbe4). [PhishingBox KillPhish](https://cybersectools.com/tools/phishingbox-killphish) is a commercial [anti-phishing](https://cybersectools.com/categories/anti-phishing) solution by [PhishingBox](https://cybersectools.com/companies/phishingbox). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | Egress Defend | PhishingBox KillPhish |
|---|---|---|
| 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 | KnowBe4 | PhishingBox |
| Headquarters | – | – |

### Use cases and capabilities

| | Egress Defend | PhishingBox KillPhish |
|---|---|---|
| Microsoft 365 | Yes | Yes |
| Natural Language Processing | Yes | – |

### Core features

**Egress Defend**

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

**PhishingBox KillPhish**

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

### Integrations

**Egress Defend**

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

**PhishingBox KillPhish**

4 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.

- [PhishingBox KillPhish](https://cybersectools.com/tools/phishingbox-killphish) fits if you are a startup.

## Egress Defend vs PhishingBox KillPhish FAQ

Common questions when comparing Egress Defend vs PhishingBox KillPhish for anti-phishing.

### What is the difference between Egress Defend and PhishingBox KillPhish?

**Egress Defend**: AI-powered anti-phishing solution for Microsoft 365 with behavioral detection. Built by KnowBe4.

**PhishingBox KillPhish**: Email threat scanning and reporting add-in for Microsoft 365 and Google. Built by PhishingBox.

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

### Who makes Egress Defend and PhishingBox KillPhish?

**Egress Defend** is made by KnowBe4. **PhishingBox KillPhish** is made by PhishingBox. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is Egress Defend a good alternative to PhishingBox KillPhish?

Often, yes. Egress Defend and PhishingBox KillPhish are both Anti-Phishing products, and both cover Microsoft 365. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Egress Defend vs Cybersentriq Advanced Phishing Protection](https://cybersectools.com/compare/cybersentriq-advanced-phishing-protection-vs-egress-defend)
- [Egress Defend vs TitanHQ PhishTitan](https://cybersectools.com/compare/egress-defend-vs-titanhq-phishtitan)
- [Egress Defend vs GreatHorn Mailbox Intelligence](https://cybersectools.com/compare/egress-defend-vs-greathorn-mailbox-intelligence)
- [PhishingBox KillPhish vs Cybersentriq Advanced Phishing Protection](https://cybersectools.com/compare/cybersentriq-advanced-phishing-protection-vs-phishingbox-killphish)
- [PhishingBox KillPhish vs TitanHQ PhishTitan](https://cybersectools.com/compare/phishingbox-killphish-vs-titanhq-phishtitan)
- [PhishingBox KillPhish vs GreatHorn Mailbox Intelligence](https://cybersectools.com/compare/greathorn-mailbox-intelligence-vs-phishingbox-killphish)

## Alternatives to each

- [See all Egress Defend alternatives](https://cybersectools.com/alternatives/egress-defend)
- [See all PhishingBox KillPhish alternatives](https://cybersectools.com/alternatives/phishingbox-killphish)

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Source: https://cybersectools.com/compare/egress-defend-vs-phishingbox-killphish

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

More on Egress Defend and PhishingBox KillPhish: 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