Mimecast vs Abnormal Security
Side-by-side from the Top 11 ranking of Top 11 Email Security Software. Last verified July 4, 2026.
The short answer
Abnormal Security ranks higher on Top 11 (#1 vs #3) for IT and security leaders. Behavioral AI that stops BEC gateways miss, API-deployed in under an hour.
At a glance
| Mimecast | Abnormal Security | |
|---|---|---|
| Top 11 rank | #3 / Top 11 Email Security Software | #1 / Top 11 Email Security Software |
| Score (out of 9.4) | 8.9 | 9.2 |
| Best for | Best for security plus archiving and continuity | Best overall for BEC and account takeover |
| Pricing | $$ (roughly $4 to $9 per user per month) | $$$ (custom, per-mailbox enterprise pricing) |
| HQ | London, UK | San Francisco, USA |
| Founded | 2003 | 2018 |
Abnormal Security
Behavioral AI that stops BEC gateways miss, API-deployed in under an hour.
abnormalsecurity.comMethodology and scoring weights live at /methodology. No vendor pays for placement — see about.