GreatHorn
GreatHorn is a cloud email security platform focused on detecting and remediating phishing, business email compromise, impersonation, credential theft, account takeover, malicious URLs, and payloads in Microsoft 365 and Google Workspace environments. It is positioned for enterprises that need post-delivery search-and-removal workflows, inbox-level remediation, and integration into broader security operations. GreatHorn is best suited for organizations that want to reduce manual phishing response across complex mail environments and connect email incidents to SOAR and SIEM tools.
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The Picari read
GreatHorn is an email security platform for Microsoft 365 and Google Workspace that focuses on phishing, BEC, impersonation, and credential theft. Its differentiator is post-delivery detection plus inbox-wide bulk remediation and API-based integration with SOAR and SIEM systems. It fits enterprises that need faster phishing response across complex mail environments.
- GreatHorn is ideal for enterprises using Microsoft 365 or Google Workspace that require advanced email security beyond native capabilities, with a focus on automated threat detection and response.
- Automated detection and remediation of phishing and BEC attacks.
- Preventing credential theft and account takeover.
- Integrating email threat intelligence with SOAR and SIEM platforms.
- Educating end-users with contextual security awareness banners.
Product catalogue
GreatHorn pricing and integrations
For GreatHorn integration and pricing details, ask Picari. Start a briefing with your question, such as whether it connects to your SIEM, identity provider and ticketing stack, or how it is priced at your seat count and data volume.
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Are you from GreatHorn? Verify this profileProfile last updated on 6 September 2026 by Picari.