GreatHorn Mailbox Intelligence vs ID Agent Graphus: Side-by-Side Comparison (2026)

GreatHorn Mailbox Intelligence

Teams running Microsoft 365 or Google Workspace who need users to actually catch phishing will find GreatHorn Mailbox Intelligence worthwhile, because the visual sender indicators and on-click URL analysis force friction into the attack chain where it matters most. The tool scores across all three NIST Detect and Awareness categories, with particular strength in DE.CM continuous monitoring and real-time risk assessment that surfaces threats before the user opens them. Skip this if your organization has already deployed a mature endpoint detection layer and expects email security to handle lateral movement detection; GreatHorn prioritizes the user reporting loop and initial threat identification, not forensic analysis of compromise.

ID Agent Graphus

Security teams at startups and SMBs with Microsoft 365 or Google Workspace will find ID Agent Graphus worth the deployment because its TrustGraph AI catches social engineering attacks that signature-based filters routinely miss, and the one-click reporting loop turns employees into a second detection layer rather than just targets. The API-based deployment means no email rerouting complexity, which matters for resource-constrained teams. Skip this if your organization needs advanced post-breach forensics or recovery workflows; Graphus prioritizes detection and quarantine over incident response depth.