
Cloud Email Security Platform
The World’s #1 Email Security Solution
Giving You the Facts in Seconds to Respond at the Speed of Deception
The reality is there is no magic solution to prevent 100% of phishing attacks, unless you remove email as a communication channel, or quarantine all emails. Neither of these scenarios allow for your organization to achieve operational efficiency. GreatHorn Cloud Email Security Platform changes the way you manage risk for your organization, layering sophisticated detection of polymorphic phishing threats with user engagement and integrated incident response, allowing your organization to address advanced threats at the moment risk enters your environment.
Reshaping Cloud Email Security to Address Today’s Risks
Legacy, email security vendors, with known good/known bad approaches, originally performed well when organizations had on-premise email platforms. As organizations have shifted to cloud email platforms (G-Suite and o365), and phishing attacks have evolved to include zero-day attacks and increasingly complex social engineering tactics, a multi-layered approach to more effectively respond to risk across each stage of the entire email lifecycle is required.
Built on the Cloud, For the Cloud
No changes to mail routing or MX records, 5 minute deployment, and out-of-the-box default policies give you the immediate protection you require.
End User Education at the Moment of Risk
Continuous engagement helps train end users at the moment a potential phish enters their inbox.
Comprehensive Facts to Detect and Respond
Using artificial intelligence and machine learning, accurately identify risk areas, threat patterns, and zero-day phishing attacks to reduce response time.

Advanced Anomaly Detection
GreatHorn adapts to your organization with out-of-the-box spoofing detection and a model for anomaly detection that evaluates relationships, communication patterns, and technical fingerprints that are unique to each sender and recipient organization.
With a threat detection engine that automatically adapts to the idiosyncrasies of your organization, effectively creating a customized platform with minimal resources, you receive the most advanced cloud email solution to reduce your risk of email-borne attacks.
In-the-Moment Risk Mitigation
User engagement capabilities provide context and nuance that are critical to support your risk migration strategy. With tailored, customized banners based on policy, in addition to stoplight visuals within Mailbox Intelligence, your end users are better able to determine if there’s a threat.


In-the-Moment Risk Mitigation
User engagement capabilities provide context and nuance that are critical to support your risk migration strategy. With tailored, customized banners based on policy, in addition to stoplight visuals within Mailbox Intelligence, your end users are better able to determine if there’s a threat.

Integrated Incident Response & Remediation
As emergent attack patterns are identified by GreatHorn’s Threat Intelligence Team, GreatHorn automatically scans and removes any threats sitting in user mailboxes. And, with comprehensive forensic capabilities, your organization can quickly and precisely identify users who have a received a threat, along with actions taken by users, to quickly search and remediate across any combination of factors.
Fact-Based Analytics Reduce MTTD and MTTR
Improve your risk profile by reducing your mean time to detect and respond to threats that bypass the perimeter by taking a fact-based approach to email security. GreatHorn measures risk across the entire email envelope, including relationship analytics, to automate granular policy-based actions. By offering dynamic, patented algorithms that analyze relationship, reputation, authentication analysis, and layering in-the-moment context to educate users at the moment a potential threat reaches them, your organization can detect and remediate threats faster.