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
Freemium
Agent Scheduling
Antivirus & Malware Protection
Automatic Device Recognition
Data Analysis
Dynamics effect