Mesh Security Limited develops email security software for managed service providers. Its platform is built specifically for MSP operating models, with central administration across customer tenants rather than enterprise-first tooling adapted later for the channel. The company offers flexible deployment options that let partners choose perimeter filtering, mailbox-level protection, or a combined model based on client requirements and migration preferences.
Mesh Security Limited focuses on helping MSPs defend customer environments against phishing, business email compromise, ransomware, impersonation, and other email-borne threats while reducing operational friction for engineers and service teams. Its offer extends beyond threat protection to include onboarding assistance, support, billing-aligned administration, and sales enablement resources that help MSPs deliver, manage, and scale email security more efficiently.
Offerings, Capabilities, and Integrations
Mesh Security Limited combines email threat protection with MSP-oriented administration. Its platform emphasizes multi-tenant visibility, centralized policy control, cross-customer search and remediation workflows, and low-maintenance operations so providers can manage email security across many client environments from one place.
The company supports multiple deployment models, including perimeter-based filtering, native Microsoft 365 integration, and a combined approach for broader coverage. Mesh Security Limited also ties operational workflows into MSP business processes through Microsoft 365 mailbox and licensing synchronization and PSA reconciliation through its Gradient MSP integration. Around the platform, it provides migration assistance, partner-facing enablement content, and direct support services for onboarding and ongoing operations.
Products and Services
- Mesh Unified: Combined email security offering that brings together MX-based perimeter protection and API-based Microsoft 365 mailbox protection under centralized MSP management.
- Mesh Gateway: MX-based secure email gateway designed to stop advanced threats before they reach the inbox, with centralized policy management, sender verification, and quarantine workflows.
- Mesh 365: Native API-based Microsoft 365 email security that analyzes internal and external mail traffic to detect advanced attacks designed to evade Microsoft’s built-in protections.
- MSP Enablement: Partner enablement service that provides custom-branded marketing brochures, onboarding guides, and email templates to help MSPs sell and deploy email security.
- Concierge Migration: White-glove migration service that helps MSPs move customers onto the platform by creating accounts, configuring domains, and replicating settings where possible.
- Dedicated Support: Direct support service available through the MSP Hub, email, and phone to assist partners with onboarding and ongoing platform use.
- NFR Licenses: Internal-use licensing for MSPs that allows eligible partners to protect their own domain and provision trial access across Mesh products.
Target Customers
Mesh Security Limited targets managed service providers as its primary customer base. It is especially relevant for MSPs that manage multiple customer tenants, standardize security policies across clients, and want a platform aligned to recurring-service operations rather than direct enterprise use. Its fit is strongest for MSPs serving SMB customers, particularly those working in Microsoft 365 environments or looking to combine mailbox protection with perimeter email filtering while simplifying onboarding, support, and monthly billing reconciliation.
Cloud Integrations and Marketplace
- Microsoft 365: Mesh Security Limited integrates natively with Microsoft 365 through Mesh 365 and also synchronizes mailbox and licensing data from Microsoft 365 to support deployment and billing alignment.
Key People
- Brian Byrne: Co-founder & CEO
- Ralph Casey: Co-founder & CTO
- Daimhin Kavanagh: Co-founder & CIO
- Ryan Constable: Account Manager
- Zoha Khan: Marketing Manager
Key Facts
- Headquarters: Dublin 2, Dublin, Ireland
- Employees: 11-50
- Annual Revenue: Undisclosed
- Parent Company: Bitdefender
- Subsidiaries: None
- Publicly Listed: No
