KnowBe4 DefendTM Advanced Inbound Email Threat Defense vs ReliaQuest GreyMatter Phishing Analyzer: side-by-side comparison (2026)

KnowBe4 DefendTM Advanced Inbound Email Threat Defense: AI-powered email security detecting phishing attacks missed by traditional tools. Built by KnowBe4.

ReliaQuest GreyMatter Phishing Analyzer: Automates phishing email analysis, remediation, and user response via AI. Built by ReliaQuest.

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

KnowBe4 DefendTM Advanced Inbound Email Threat Defense is made by KnowBe4. ReliaQuest GreyMatter Phishing Analyzer is made by ReliaQuest. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

Often, yes. KnowBe4 DefendTM Advanced Inbound Email Threat Defense and ReliaQuest GreyMatter Phishing Analyzer are both Anti-Phishing products. Use the table above to see where features, deployment and company size fit differ.