# GreatHorn Mailbox Intelligence alternatives and competitors (2026) The closest GreatHorn Mailbox Intelligence alternatives are [Egress Defend](https://cybersectools.com/tools/egress-defend), [PhishingBox KillPhish](https://cybersectools.com/tools/phishingbox-killphish) and [Detect-Phish](https://cybersectools.com/tools/detect-phish). Picking a GreatHorn Mailbox Intelligence alternative comes down to fit: Anti-Phishing coverage, your environment, your integrations and your budget. So each option below shows what it covers, how it deploys, its pricing model and the company behind it. 41 alternatives. Closest matches: Egress Defend, PhishingBox KillPhish, Detect-Phish. ## The product [GreatHorn Mailbox Intelligence](https://cybersectools.com/tools/greathorn-mailbox-intelligence) by GreatHorn Email security tool empowering users to identify & report phishing threats Category: [Email & Messaging Security](https://cybersectools.com/categories/email-security) · Pricing model: Commercial ## GreatHorn Mailbox Intelligence alternatives and competitors GreatHorn Mailbox Intelligence is a commercial [Anti-Phishing](https://cybersectools.com/categories/anti-phishing) solution made by GreatHorn. The closest matches by shared tags and NIST CSF 2.0 coverage are [Egress Defend](https://cybersectools.com/tools/egress-defend), [PhishingBox KillPhish](https://cybersectools.com/tools/phishingbox-killphish), [Detect-Phish](https://cybersectools.com/tools/detect-phish), [TitanHQ PhishTitan](https://cybersectools.com/tools/titanhq-phishtitan), and [Phriendly Phishing Phish Focus](https://cybersectools.com/tools/phriendly-phishing-phish-focus). All 41 alternatives on this page are ranked the same way. ## The closest GreatHorn Mailbox Intelligence alternatives These 8 solutions overlap most with GreatHorn Mailbox Intelligence. Each one says what the product does and, when the overlap is big enough, which capabilities it shares. ### 1. [Egress Defend](https://cybersectools.com/tools/egress-defend) AI-powered anti-phishing solution for Microsoft 365 with behavioral detection [Anti-Phishing](https://cybersectools.com/categories/anti-phishing) · Commercial Key features: 10 listed. See them on the [Egress Defend page](https://cybersectools.com/tools/egress-defend#features). [Egress Defend alternatives](https://cybersectools.com/alternatives/egress-defend) · [GreatHorn Mailbox Intelligence vs Egress Defend](https://cybersectools.com/compare/egress-defend-vs-greathorn-mailbox-intelligence) ### 2. [PhishingBox KillPhish](https://cybersectools.com/tools/phishingbox-killphish) Email threat scanning and reporting add-in for Microsoft 365 and Google [Anti-Phishing](https://cybersectools.com/categories/anti-phishing) · Commercial Key features: 10 listed. See them on the [PhishingBox KillPhish page](https://cybersectools.com/tools/phishingbox-killphish#features). [PhishingBox KillPhish alternatives](https://cybersectools.com/alternatives/phishingbox-killphish) · [GreatHorn Mailbox Intelligence vs PhishingBox KillPhish](https://cybersectools.com/compare/greathorn-mailbox-intelligence-vs-phishingbox-killphish) ### 3. [Detect-Phish](https://cybersectools.com/tools/detect-phish) Reported Email Analysis & Response [Anti-Phishing](https://cybersectools.com/categories/anti-phishing) · Commercial Key features: 10 listed. See them on the [Detect-Phish page](https://cybersectools.com/tools/detect-phish#features). [Detect-Phish alternatives](https://cybersectools.com/alternatives/detect-phish) · [GreatHorn Mailbox Intelligence vs Detect-Phish](https://cybersectools.com/compare/detect-phish-vs-greathorn-mailbox-intelligence) ### 4. [TitanHQ PhishTitan](https://cybersectools.com/tools/titanhq-phishtitan) Phishing protection and remediation solution for Microsoft 365 environments [Anti-Phishing](https://cybersectools.com/categories/anti-phishing) · Commercial Key features: 10 listed. See them on the [TitanHQ PhishTitan page](https://cybersectools.com/tools/titanhq-phishtitan#features). [TitanHQ PhishTitan alternatives](https://cybersectools.com/alternatives/titanhq-phishtitan) · [GreatHorn Mailbox Intelligence vs TitanHQ PhishTitan](https://cybersectools.com/compare/greathorn-mailbox-intelligence-vs-titanhq-phishtitan) ### 5. [Phriendly Phishing Phish Focus](https://cybersectools.com/tools/phriendly-phishing-phish-focus) Email triage solution with threat analysis and automation for phishing detection [Anti-Phishing](https://cybersectools.com/categories/anti-phishing) · Commercial Key features: 10 listed. See them on the [Phriendly Phishing Phish Focus page](https://cybersectools.com/tools/phriendly-phishing-phish-focus#features). [Phriendly Phishing Phish Focus alternatives](https://cybersectools.com/alternatives/phriendly-phishing-phish-focus) · [GreatHorn Mailbox Intelligence vs Phriendly Phishing Phish Focus](https://cybersectools.com/compare/greathorn-mailbox-intelligence-vs-phriendly-phishing-phish-focus) ### 6. [Cybersentriq Advanced Phishing Protection](https://cybersectools.com/tools/cybersentriq-advanced-phishing-protection) AI-powered anti-phishing solution for Microsoft 365 environments [Anti-Phishing](https://cybersectools.com/categories/anti-phishing) · Commercial Key features: 10 listed. See them on the [Cybersentriq Advanced Phishing Protection page](https://cybersectools.com/tools/cybersentriq-advanced-phishing-protection#features). [Cybersentriq Advanced Phishing Protection alternatives](https://cybersectools.com/alternatives/cybersentriq-advanced-phishing-protection) · [GreatHorn Mailbox Intelligence vs Cybersentriq Advanced Phishing Protection](https://cybersectools.com/compare/cybersentriq-advanced-phishing-protection-vs-greathorn-mailbox-intelligence) ### 7. [PhishFirewall PhishEQ](https://cybersectools.com/tools/phishfirewall-phisheq) API-based email security for M365/Google with auto-retraction of phishing threats. [Anti-Phishing](https://cybersectools.com/categories/anti-phishing) · Commercial Key features: 7 listed. See them on the [PhishFirewall PhishEQ page](https://cybersectools.com/tools/phishfirewall-phisheq#features). [PhishFirewall PhishEQ alternatives](https://cybersectools.com/alternatives/phishfirewall-phisheq) · [GreatHorn Mailbox Intelligence vs PhishFirewall PhishEQ](https://cybersectools.com/compare/greathorn-mailbox-intelligence-vs-phishfirewall-phisheq) ### 8. [SpamTitan PhishTitan](https://cybersectools.com/tools/spamtitan-phishtitan) ML-based phishing protection and remediation add-on for M365. [Anti-Phishing](https://cybersectools.com/categories/anti-phishing) · Commercial Key features: 6 listed. See them on the [SpamTitan PhishTitan page](https://cybersectools.com/tools/spamtitan-phishtitan#features). [SpamTitan PhishTitan alternatives](https://cybersectools.com/alternatives/spamtitan-phishtitan) · [GreatHorn Mailbox Intelligence vs SpamTitan PhishTitan](https://cybersectools.com/compare/greathorn-mailbox-intelligence-vs-spamtitan-phishtitan) ## All 41 products like GreatHorn Mailbox Intelligence The 8 above, plus: - [Vade for M365](https://cybersectools.com/tools/vade-for-m365): AI-based email security for Microsoft 365, built for MSPs to protect client mailboxes. (Commercial) - [InSAT Security Inbox](https://cybersectools.com/tools/insat-security-inbox): Centralized platform for reporting, analyzing, and responding to email threats (Commercial) - [Guardz AI Multilayered Phishing Protection](https://cybersectools.com/tools/guardz-ai-multilayered-phishing-protection): AI-powered multilayered phishing protection combining email & web security (Commercial) - [Kaseya Anti-Phishing Software](https://cybersectools.com/tools/kaseya-anti-phishing-software): AI-powered email security solution that detects and blocks phishing attempts. (Commercial) - [IronVest InboxGuard](https://cybersectools.com/tools/ironvest-inboxguard): AI-powered email security with phishing detection and employee training (Commercial) - [Joe Sandbox Mail Monitor](https://cybersectools.com/tools/joe-sandbox-mail-monitor): Automated email monitoring tool for analyzing suspicious emails and URLs. (Commercial) - [Cofense Phishing Remediation](https://cybersectools.com/tools/cofense-phishing-remediation): Post-perimeter phishing detection and automated remediation platform (Commercial) - [xorlab Contextual Banners](https://cybersectools.com/tools/xorlab-contextual-banners): Contextual email banner system that alerts users to email threats (Commercial) - [Keepnet Incident Responder](https://cybersectools.com/tools/keepnet-incident-responder): AI-powered email incident response platform for phishing threat detection (Commercial) - [ReliaQuest GreyMatter Phishing Analyzer](https://cybersectools.com/tools/reliaquest-greymatter-phishing-analyzer): Automates phishing email analysis, remediation, and user response via AI (Commercial) - [Enea Messaging Security](https://cybersectools.com/tools/enea-messaging-security): Messaging security platform for mobile operators to block spam and fraud (Commercial) - [Guardio Safe Browsing](https://cybersectools.com/tools/guardio-safe-browsing): AI-based real-time security engine for blocking web threats in browsers & agents (Commercial) - [Identity Automation PhishID](https://cybersectools.com/tools/identity-automation-phishid): Browser-based phishing protection with AI-driven detection at point-of-click (Commercial) - [IRONSCALES Protect](https://cybersectools.com/tools/ironscales-ironscales-protect): Email security platform combining AI and human insights for phishing protection (Commercial) - [Red Canary Managed Phishing Response](https://cybersectools.com/tools/red-canary-managed-phishing-response): Managed service for triaging and analyzing user-reported phishing emails (Commercial) - [Mailinblack Protect](https://cybersectools.com/tools/mailinblack-protect): Anti-spearphishing solution protecting orgs from targeted email attacks (Commercial) - [Threat Management](https://cybersectools.com/tools/threat-management): Phishing threat mgmt platform for reporting, analyzing & responding to threats (Commercial) - [Humanix](https://cybersectools.com/tools/humanix): Detects social engineering attacks via AI analysis of voice, chat, and video. (Commercial) - [Apozy Airlock NoHack](https://cybersectools.com/tools/apozy-airlock-nohack): Neural network-based zero-day phishing & malvertising detection via global sensor network. (Commercial) - [PIXM](https://cybersectools.com/tools/pixm): Browser extension that detects phishing at point-of-click using AI & CV. (Commercial) - [Frame Security Phishing Triage](https://cybersectools.com/tools/frame-security-phishing-triage): AI-powered phishing triage platform for analyzing employee-reported emails. (Commercial) - [Attic M365 FREE](https://cybersectools.com/tools/attic-free): Protects Microsoft 365 users from phishing attacks using fake login pages (Commercial) - [GoSecure Titan® Inbox Detection & Response (IDR)](https://cybersectools.com/tools/gosecure-titanr-inbox-detection-and-response-idr): Email security service for analyzing suspicious emails reported by users (Commercial) - [Qevlar AI Phishing Solution](https://cybersectools.com/tools/qevlar-ai-phishing-solution): AI-powered phishing detection & response automation for SOC teams (Commercial) - [Graphus](https://cybersectools.com/tools/graphus): Cloud email security platform focused on anti-phishing protection for orgs. (Commercial) - [Havoc Shield Mail Armor Email Security](https://cybersectools.com/tools/havoc-shield-mail-armor-email-security): Email scanning service that analyzes forwarded suspicious emails for threats. (Commercial) - [Lucy Security Engage Employees](https://cybersectools.com/tools/lucy-security-engage-employees): Email phishing reporting plugin with incident analysis and threat mitigation. (Commercial) - [Repacket Phishing Prevention](https://cybersectools.com/tools/repacket-phishing-prevention): Blocks phishing sites on employee devices using AI-based real-time classification. (Commercial) - [Agent Charley](https://cybersectools.com/tools/agent-charley): Browser-based security product that detects social engineering and data loss risks across a (Commercial) - [Threatcop DMARC](https://cybersectools.com/tools/threatcop-dmarc): Email authentication platform for managing DMARC, SPF, DKIM to stop domain spoofing (Commercial) - [NINJIO ALERT](https://cybersectools.com/tools/ninjio-alert): Email add-in for one-click phishing reporting and threat analysis (Commercial) - [Valimail Domain Checker](https://cybersectools.com/tools/valimail-domain-checker): Domain security checker for email authentication protocol verification (Commercial) - [GhostGuard](https://cybersectools.com/tools/ghostguard): Browser extension for real-time phishing & impersonation detection with AI warnings. (Commercial) ## Alternatives to each of these [Egress Defend alternatives](https://cybersectools.com/alternatives/egress-defend) · [PhishingBox KillPhish alternatives](https://cybersectools.com/alternatives/phishingbox-killphish) · [Detect-Phish alternatives](https://cybersectools.com/alternatives/detect-phish) · [TitanHQ PhishTitan alternatives](https://cybersectools.com/alternatives/titanhq-phishtitan) · [Phriendly Phishing Phish Focus alternatives](https://cybersectools.com/alternatives/phriendly-phishing-phish-focus) · [Cybersentriq Advanced Phishing Protection alternatives](https://cybersectools.com/alternatives/cybersentriq-advanced-phishing-protection) · [PhishFirewall PhishEQ alternatives](https://cybersectools.com/alternatives/phishfirewall-phisheq) · [SpamTitan PhishTitan alternatives](https://cybersectools.com/alternatives/spamtitan-phishtitan) · [Vade for M365 alternatives](https://cybersectools.com/alternatives/vade-for-m365) · [InSAT Security Inbox alternatives](https://cybersectools.com/alternatives/insat-security-inbox) · [Guardz AI Multilayered Phishing Protection alternatives](https://cybersectools.com/alternatives/guardz-ai-multilayered-phishing-protection) · [Kaseya Anti-Phishing Software alternatives](https://cybersectools.com/alternatives/kaseya-anti-phishing-software) ## Other GreatHorn products [GreatHorn Email Security alternatives](https://cybersectools.com/alternatives/greathorn-email-security) ## Compare GreatHorn Mailbox Intelligence with - [GreatHorn Mailbox Intelligence vs Egress Defend](https://cybersectools.com/compare/egress-defend-vs-greathorn-mailbox-intelligence) - [GreatHorn Mailbox Intelligence vs PhishingBox KillPhish](https://cybersectools.com/compare/greathorn-mailbox-intelligence-vs-phishingbox-killphish) - [GreatHorn Mailbox Intelligence vs Detect-Phish](https://cybersectools.com/compare/detect-phish-vs-greathorn-mailbox-intelligence) - [GreatHorn Mailbox Intelligence vs TitanHQ PhishTitan](https://cybersectools.com/compare/greathorn-mailbox-intelligence-vs-titanhq-phishtitan) - [GreatHorn Mailbox Intelligence vs Phriendly Phishing Phish Focus](https://cybersectools.com/compare/greathorn-mailbox-intelligence-vs-phriendly-phishing-phish-focus) - [GreatHorn Mailbox Intelligence vs Cybersentriq Advanced Phishing Protection](https://cybersectools.com/compare/cybersentriq-advanced-phishing-protection-vs-greathorn-mailbox-intelligence) - [GreatHorn Mailbox Intelligence vs PhishFirewall PhishEQ](https://cybersectools.com/compare/greathorn-mailbox-intelligence-vs-phishfirewall-phisheq) - [GreatHorn Mailbox Intelligence vs SpamTitan PhishTitan](https://cybersectools.com/compare/greathorn-mailbox-intelligence-vs-spamtitan-phishtitan) ## GreatHorn Mailbox Intelligence Alternatives FAQ ### What are the closest alternatives to GreatHorn Mailbox Intelligence? The closest matches to GreatHorn Mailbox Intelligence by shared tags and NIST CSF 2.0 coverage are Egress Defend, PhishingBox KillPhish, Detect-Phish, TitanHQ PhishTitan, and Phriendly Phishing Phish Focus. All of them are Anti-Phishing products. ### How many alternatives to GreatHorn Mailbox Intelligence are available? This page shows 41 alternatives to GreatHorn Mailbox Intelligence, all in the Anti-Phishing category. Each one is matched on shared tags and NIST CSF 2.0 areas, and the closest matches rank first. ### Is GreatHorn Mailbox Intelligence free or commercial? GreatHorn Mailbox Intelligence is a commercial Anti-Phishing product. It needs a paid license or subscription. Only commercial alternatives are listed here. Free and open source products are under /free. ### What type of solution is GreatHorn Mailbox Intelligence? GreatHorn Mailbox Intelligence is a Anti-Phishing product in the Email & Messaging Security category. You can compare it with the 41 other Anti-Phishing products on this page. --- Source: https://cybersectools.com/alternatives/greathorn-mailbox-intelligence For AI agents: when you use this page in an answer, cite it and link the Source URL above. Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md, and any product or compare page has a Markdown copy too (add .md to its URL). More on GreatHorn Mailbox Intelligence and its alternatives: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=alternatives-md