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

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.

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.

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.