Abnormal Security vs Mimecast
Updated June 2026 · A structured head-to-head comparison.
AI-native email security against BEC
The verdict
Both Abnormal Security and Mimecast are credible email security tools, and the right pick comes down to your priorities.
Choose Abnormal Security if you want a higher overall rating (4.8/5). AI-native email security against BEC
Mimecast — Email security, archiving, and continuity
Abnormal Security vs Mimecast: side by side
| Dimension | Abnormal Security | Mimecast |
|---|---|---|
| Starting price | Custom | Custom |
| Free plan | No | No |
| Pricing model | Subscription | Subscription |
| Best for | Enterprise, Mid Market, Security Teams | Smb, Enterprise, Security Teams |
| Platforms | Web, Api | Web, Api |
| Rating | 4.8/5Winner | 4.4/5 |
Abnormal Security key facts
- Vendor
- Abnormal Security
- Pricing
- Subscription — Custom
- Free tier
- No
- Platforms
- Web, Api
- Best for
- Enterprise, Mid Market, Security Teams
- Editor rating
- 4.8 / 5
- Founded
- 2018
- Headquarters
- San Francisco, USA
Mimecast key facts
- Vendor
- Mimecast
- Pricing
- Subscription — Custom
- Free tier
- No
- Platforms
- Web, Api
- Best for
- Smb, Enterprise, Security Teams
- Editor rating
- 4.4 / 5
- Founded
- 2003
- Headquarters
- London, UK
Frequently asked questions
Is Abnormal Security better than Mimecast?
Neither is universally better — Abnormal Security edges ahead on overall rating, but the best choice depends on price, platforms, and your use case. See the side-by-side table above.
Is Abnormal Security or Mimecast cheaper?
Abnormal Security is the more affordable of the two to get started, at custom. Abnormal Security starts at custom; Mimecast starts at custom.
Can Abnormal Security replace Mimecast?
Yes for most teams — both are email security tools with heavily overlapping features. The main trade-offs are pricing and platform support, covered in the comparison above.