Attic M365 FREE vs ReliaQuest GreyMatter Phishing Analyzer: Side-by-Side Comparison (2026)

Attic M365 FREE: Protects Microsoft 365 users from phishing attacks using fake login pages. built by Attic Security. Core capabilities include Real-time detection of fake Microsoft 365 login pages, Red alarm screen warning when accessing fraudulent pages, Authenticity seal display on official Microsoft 365 login pages..

ReliaQuest GreyMatter Phishing Analyzer: Automates phishing email analysis, remediation, and user response via AI. built by ReliaQuest. Core capabilities include AI-driven phishing email analysis with sentiment analysis and historical data comparison, Automated email purging across all mailboxes, Malicious link and file blocking at network level..

Both serve the Anti-Phishing market but differ in approach, feature depth, and target audience.

Attic M365 FREE differentiates with Real-time detection of fake Microsoft 365 login pages, Red alarm screen warning when accessing fraudulent pages, Authenticity seal display on official Microsoft 365 login pages. ReliaQuest GreyMatter Phishing Analyzer differentiates with AI-driven phishing email analysis with sentiment analysis and historical data comparison, Automated email purging across all mailboxes, Malicious link and file blocking at network level.

Attic M365 FREE is developed by Attic Security. ReliaQuest GreyMatter Phishing Analyzer is developed by ReliaQuest. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

Attic M365 FREE integrates with Microsoft 365. ReliaQuest GreyMatter Phishing Analyzer integrates with AWS, CrowdStrike, Devo, Exabeam, Microsoft and 4 more. Check integration compatibility with your existing security stack before deciding.

Attic M365 FREE and ReliaQuest GreyMatter Phishing Analyzer serve similar Anti-Phishing use cases: both are Anti-Phishing tools. Review the feature comparison above to determine which fits your requirements.