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GreatHorn Mailbox Intelligence is a commercial anti-phishing tool by GreatHorn. Egress Defend is a commercial anti-phishing tool by Egress. Compare features, ratings, integrations, and community reviews side by side to find the best anti-phishing fit for your security stack.
CST VerdictBased on our analysis of NIST CSF 2.0 coverage, core features, integrations, company size fit, here is our conclusion:
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.
Mid-market and enterprise security teams drowning in phishing false positives will find real value in Egress Defend's behavioral AI that learns individual user patterns instead of firing on every suspicious link. The platform's time-of-click verification and one-click remediation directly address the gap between detection and human response, cutting remediation friction that legacy tools create. Skip this if your organization needs a unified email security stack that also handles data loss prevention; Egress Defend stays focused on phishing and leaves DLP to other tools.
Email security tool empowering users to identify & report phishing threats
AI-powered anti-phishing solution for Microsoft 365 with behavioral detection
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Common questions about comparing GreatHorn Mailbox Intelligence vs Egress Defend for your anti-phishing needs.
GreatHorn Mailbox Intelligence: Email security tool empowering users to identify & report phishing threats. built by GreatHorn. headquartered in United States. Core capabilities include Visual sender and domain trustworthiness indicators, In-email banner notifications for suspicious messages, User-initiated phishing reporting capabilities..
Egress Defend: AI-powered anti-phishing solution for Microsoft 365 with behavioral detection. built by Egress. headquartered in United Kingdom. Core capabilities include Behavioral AI-based phishing detection, Natural language processing for email intent analysis, Machine learning user behavior baselines..
Both serve the Anti-Phishing market but differ in approach, feature depth, and target audience.
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