# EAST Anti-Phishing Tool vs GreatHorn Mailbox Intelligence: side-by-side comparison (2026) [EAST Anti-Phishing Tool](https://cybersectools.com/tools/east-anti-phishing-tool) is a free [anti-phishing](https://cybersectools.com/categories/anti-phishing) solution by [Eye Security](https://cybersectools.com/companies/eye-security). [GreatHorn Mailbox Intelligence](https://cybersectools.com/tools/greathorn-mailbox-intelligence) is a commercial [anti-phishing](https://cybersectools.com/categories/anti-phishing) solution by [GreatHorn](https://cybersectools.com/companies/greathorn). Features, integrations, deployment and the company behind each one, side by side. ## Side-by-side comparison | | EAST Anti-Phishing Tool | GreatHorn Mailbox Intelligence | |---|---|---| | Pricing model | Free | Commercial | | Category | Anti-Phishing | Anti-Phishing | | Verified | No | No | | Deployment type | Cloud | Cloud | | Company size fit | Startup, SMB, Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise | | Company | Eye Security | GreatHorn | | Headquarters | – | – | ### Use cases and capabilities | | EAST Anti-Phishing Tool | GreatHorn Mailbox Intelligence | |---|---|---| | Microsoft 365 | Yes | Yes | | Microsoft | Yes | – | | Spoofing | Yes | – | | Fraud Detection | Yes | – | ### Core features **EAST Anti-Phishing Tool** 4 features listed. Sign in on the page to see them. **GreatHorn Mailbox Intelligence** 10 features listed. Sign in on the page to see them. ### Integrations **EAST Anti-Phishing Tool** 2 integrations listed. Sign in on the page to see them. **GreatHorn Mailbox Intelligence** 2 integrations listed. Sign in on the page to see them. ## Which one fits you Based on what each listing shows: deployment, company size, price and open source. - [EAST Anti-Phishing Tool](https://cybersectools.com/tools/east-anti-phishing-tool) fits if you need a free product. ## EAST Anti-Phishing Tool vs GreatHorn Mailbox Intelligence FAQ Common questions when comparing EAST Anti-Phishing Tool vs GreatHorn Mailbox Intelligence for anti-phishing. ### What is the difference between EAST Anti-Phishing Tool and GreatHorn Mailbox Intelligence? **EAST Anti-Phishing Tool**: Free anti-phishing tool for M365 that deploys via a custom CSS file in Entra. Built by Eye Security. **GreatHorn Mailbox Intelligence**: Email security tool empowering users to identify & report phishing threats. Built by GreatHorn. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes EAST Anti-Phishing Tool and GreatHorn Mailbox Intelligence? **EAST Anti-Phishing Tool** is made by Eye Security. **GreatHorn Mailbox Intelligence** is made by GreatHorn. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit. ### Is EAST Anti-Phishing Tool a good alternative to GreatHorn Mailbox Intelligence? Often, yes. EAST Anti-Phishing Tool and GreatHorn Mailbox Intelligence are both Anti-Phishing products, and both cover Microsoft 365. Key differences: EAST Anti-Phishing Tool is Free while GreatHorn Mailbox Intelligence is Commercial. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [EAST Anti-Phishing Tool vs SpamTitan PhishTitan](https://cybersectools.com/compare/east-anti-phishing-tool-vs-spamtitan-phishtitan) - [EAST Anti-Phishing Tool vs Vade for M365](https://cybersectools.com/compare/east-anti-phishing-tool-vs-vade-for-m365) - [EAST Anti-Phishing Tool vs Egress Defend](https://cybersectools.com/compare/east-anti-phishing-tool-vs-egress-defend) - [GreatHorn Mailbox Intelligence vs SpamTitan PhishTitan](https://cybersectools.com/compare/greathorn-mailbox-intelligence-vs-spamtitan-phishtitan) - [GreatHorn Mailbox Intelligence vs Vade for M365](https://cybersectools.com/compare/greathorn-mailbox-intelligence-vs-vade-for-m365) - [GreatHorn Mailbox Intelligence vs Egress Defend](https://cybersectools.com/compare/egress-defend-vs-greathorn-mailbox-intelligence) ## Alternatives to each - [See all EAST Anti-Phishing Tool alternatives](https://cybersectools.com/alternatives/east-anti-phishing-tool) - [See all GreatHorn Mailbox Intelligence alternatives](https://cybersectools.com/alternatives/greathorn-mailbox-intelligence) --- Source: https://cybersectools.com/compare/east-anti-phishing-tool-vs-greathorn-mailbox-intelligence For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/east-anti-phishing-tool.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on EAST Anti-Phishing Tool and GreatHorn Mailbox Intelligence: 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=compare-md