Mimecast

Best Mimecast Alternatives

Compare 8 alternatives for 2026

Mimecast is the global leader in email and collaboration protection, defending against the most sophisticated threats.

Founded 2003Broadgate, London1000+ EmployeesWeb, Linux, Windows, Mac

Key Features

Agent SchedulingAntivirus & Malware ProtectionAutomatic Device RecognitionData AnalysisDynamics effectEmail MonitoringExpose Hidden RisksSSL InspectionStatutory Compliances
Paid

Top 8 Mimecast competitors

Curated list of the best cloud security services tools to replace Mimecast

Mimecast — Pros & Cons

Pros

  • Nearly eliminates phishing, malware, and impersonation attacks with multi-layered AI-powered detection.
  • Highly configurable email security policies allow granular control over inbound and outbound messages.
  • Attachment sandboxing and URL time-of-click rewriting effectively protect against embedded email threats.
  • Seamless integration with Microsoft 365 and Outlook for in-app quarantine management.
  • Comprehensive email archiving and continuity services maintain access to emails during outages.

Cons

  • Admin console interface is often reported as confusing and not intuitive, with a steep learning curve.
  • Legitimate emails are occasionally misclassified and held in quarantine, requiring manual release.
  • Significant year-over-year subscription cost increases lead some organizations to seek other solutions.
  • Email links experience noticeable delays in opening due to time-of-click protection scanning.
  • Customer support responsiveness and quality have reportedly declined over recent years.

Feature Comparison

Compare Mimecast with top alternatives side by side.

FeatureMimecast Cisco DUOKisiOrca SecurityNextCloud
Pricing
Paid
Freemium
Paid
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Freemium
Agent Scheduling
Antivirus & Malware Protection
Automatic Device Recognition
Data Analysis
Dynamics effect