At a glance
- Mimecast is listed under Email security, alongside Abnormal AI, Barracuda Email Protection and dmarcian.
- Mimecast is available on Mac, Windows and Linux.
- Mimecast works with Slack, SharePoint and OneDrive.
- Mimecast's main features: Email and collaboration security, AI security, Data protection, Security behavior management, Data governance.
- Mimecast has a public API.
- We haven't confirmed whether Mimecast has a free plan.
Facts from mimecast.com, checked November 14, 2026.
The summary writes itself once 5 people have reviewed this tool.
It's built only from what reviewers say: who it's best for, who should think twice, and what comes up again and again.



