GreatHorn
Incident response software
Cloud email security solutions
System security software
Email security software
- Features
- Ease of use
- Ease of management
- Quality of support
- Affordability
- Market presence
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What is GreatHorn
GreatHorn is a cloud-based email security platform focused on protecting organizations using Microsoft 365 and Google Workspace from phishing, business email compromise, and other email-borne threats. It provides inbound and outbound email protection, user reporting and awareness workflows, and administrative controls aimed at security and IT teams. The product emphasizes email-specific detection and response capabilities rather than broad infrastructure monitoring or general-purpose observability.
Focused phishing and BEC protection
GreatHorn centers on email-borne threats such as phishing, impersonation, and business email compromise. This focus can make deployment and day-to-day tuning more straightforward than broader security analytics platforms that cover many telemetry sources. It is designed to work directly with common cloud email suites, aligning controls to email workflows and policies.
Microsoft 365 and Google integration
The platform is built to integrate with major cloud email providers, which supports common use cases like scanning messages, applying policy actions, and managing quarantines. This reduces reliance on on-premises gateways for organizations that are primarily cloud-email based. It also supports centralized administration for email security operations.
Email incident handling workflows
GreatHorn includes capabilities oriented to email incident response, such as user-reported message handling and administrative review actions. These workflows help security teams triage suspicious emails and take remediation steps within the email context. For organizations without a full-scale security operations platform, this can provide practical response structure for email-driven incidents.
Narrow scope beyond email
GreatHorn primarily addresses email security and does not aim to provide broad infrastructure observability or full security analytics across endpoints, networks, and cloud workloads. Organizations looking for a single platform to correlate many telemetry sources may need additional tools. This can increase integration effort for end-to-end incident response outside the email channel.
Limited public detail on scale
Compared with large, widely benchmarked platforms in adjacent monitoring and security operations categories, there is less publicly available information on performance at very large enterprise scale. Buyers may need to validate throughput, latency, and administrative scalability through trials and references. This can lengthen evaluation cycles for regulated or high-volume environments.
Feature depth varies by suite
Capabilities and administrative actions can depend on the underlying email platform (for example, differences between Microsoft 365 and Google Workspace APIs and controls). Some advanced response or policy options may require specific licensing, permissions, or tenant configurations. This can create variability in outcomes across mixed or complex email environments.
Plan & Pricing
| Plan | Price | Key features & notes |
|---|---|---|
| Starter | Not publicly listed — contact GreatHorn sales | SMB-focused; employee phish reporting, manual remediation for admin-reported phish, default threat detection for automated quarantine, access to GreatHorn Support Knowledgebase. |
| Basic | Not publicly listed — contact GreatHorn sales | Includes Starter features plus real-time detection & response, customer support for onboarding, advanced customization, expanded event data retention. |
| Enterprise | Not publicly listed — contact GreatHorn sales / custom pricing | Includes Basic features plus dedicated Customer Success Manager, full suite (advanced link and file protection), RESTful API access, and enterprise-level capabilities. |
