# Egress Defend vs NotifySecurity: 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). [NotifySecurity](https://cybersectools.com/tools/notifysecurity) is a free [Anti-Phishing](https://cybersectools.com/categories/anti-phishing) solution. Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | Egress Defend | NotifySecurity |
|---|---|---|
| Pricing model | Commercial | Free |
| Category | Anti-Phishing | Anti-Phishing |
| Verified | No | No |
| Deployment type | Cloud | Cloud |
| Company size fit | SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise |
| GitHub stars | – | 133 |
| Last commit | – | Nov 2018 |
| Company | KnowBe4 | – |
| Headquarters | – | – |

### Use cases and capabilities

| | Egress Defend | NotifySecurity |
|---|---|---|
| Microsoft 365 | Yes | – |
| Natural Language Processing | Yes | – |
| Outlook | – | Yes |
| SMTP | – | Yes |

### Core features

**Egress Defend**

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

**NotifySecurity**

No features listed.

### Integrations

**Egress Defend**

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

**NotifySecurity**

No integrations listed.

## Which one fits you

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

- [NotifySecurity](https://cybersectools.com/tools/notifysecurity) fits if you need a free product and you want an open-source product.

## Egress Defend vs NotifySecurity FAQ

Common questions when comparing Egress Defend vs NotifySecurity for Anti-Phishing.

### What is the difference between Egress Defend and NotifySecurity?

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

**NotifySecurity**: An Outlook add-in that enables one-click reporting of suspicious emails to security teams with integrated statistics tracking and SMTP header collection.

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

### Who makes Egress Defend and NotifySecurity?

**Egress Defend** is made by KnowBe4. **NotifySecurity** is open-source with 133 GitHub stars. 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 NotifySecurity?

Often, yes. Egress Defend and NotifySecurity are both Anti-Phishing products. Key differences: Egress Defend is Commercial while NotifySecurity is Free, NotifySecurity is open-source. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Egress Defend vs Vade for M365](https://cybersectools.com/compare/egress-defend-vs-vade-for-m365)
- [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)
- [NotifySecurity vs Vade for M365](https://cybersectools.com/compare/notifysecurity-vs-vade-for-m365)
- [NotifySecurity vs Cybersentriq Advanced Phishing Protection](https://cybersectools.com/compare/cybersentriq-advanced-phishing-protection-vs-notifysecurity)
- [NotifySecurity vs TitanHQ PhishTitan](https://cybersectools.com/compare/notifysecurity-vs-titanhq-phishtitan)

## Alternatives to each

- [See all Egress Defend alternatives](https://cybersectools.com/alternatives/egress-defend)
- [See all NotifySecurity alternatives](https://cybersectools.com/alternatives/notifysecurity)

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

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 NotifySecurity: 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