G2 Vendor Directory

KnowBe4 Email & Collaboration Security vs. IronVest InboxGuard

A side-by-side comparison based on G2 review data.

MetricKnowBe4 Email & Collaboration Security

by KnowBe4, Inc.

IronVest InboxGuard

by Retruster Ltd

Overall rating4.54.8
Review count7624
Ease of use8.99.5
Ease of setup8.910.0
Quality of support9.09.2
Meets requirements9.19.7
NPS69.86301487.5
Small Business29.7%66.7%
Mid-Market55.4%29.2%
Enterprise14.9%4.2%
Total page views596250
Total LLM citations129302

KnowBe4 Email & Collaboration Security

KnowBe4 Email & Collaboration Security is the AI-native defense suite built to protect every conversation across Microsoft 365 and Google Workspace. Combining multi-engine behavioral AI with real-time user coaching, the platform stops inbound threats, prevents outbound data loss, and automates SOC response across the security lifecycle. Key Capabilities: - Inbound Protection (Defend): Multi-engine AI blocks zero-payload BEC, executive impersonation, quishing, and prompt injections that pass native mail filters.

Pros

  • Email Security
  • Protection
  • Ease of Use
  • Customer Support
  • Detection Efficiency
  • Setup Ease

IronVest InboxGuard

IronVest InboxGuard, previously "Retruster", is the only AI-powered anti-phishing solution that delivers security training both contextually and in real-time on actual phishing emails that your organization might receive. We layer our solution with an immersive security training program that offers consistently updated, relevant, and highly engaging content that is specifically designed to change employee behavior and promote a strong security culture throughout your enterprise.

Pros