Mimecast has spent two decades focused on making email safe and reliable. The platform sits in front of an organization’s email infrastructure, inspecting every inbound, outbound, and internal message for threats, policy violations, and data leaks.
The threat protection engine uses AI, sandboxing, and URL rewriting to catch phishing, impersonation attacks, malicious attachments, and zero-day exploits. Mimecast’s Targeted Threat Protection specifically addresses URL-based attacks by scanning links at the time of click — not just at delivery.
Email continuity is another core feature. If Microsoft 365 or Google Workspace goes down, Mimecast keeps email flowing through its independent cloud infrastructure. Users can send and receive messages through a web portal or Outlook plugin without interruption.
The platform also handles email archiving with unlimited retention, e-discovery, and compliance. Security awareness training rounds out the suite, helping employees recognize social engineering attempts. Mimecast was acquired by Permira in 2022 for $5.8 billion and serves over 42,000 customers across 100+ countries.
