Our take
What our shortlists say about the one we picked.
- Abnormal Inbound Email Security
Best for: Microsoft 365 or Google teams fighting BEC
It belongs here as the API option, because it judges each message against normal behavior and needs no rules to maintain. That suits you if vendor and payment fraud worry you more than mass malware. Since it does not sit in the mail path, decide whether you pair it with a gateway or with the filtering your mail platform already has.
From Best Email Security Solutions for Business, Fall 2026
Reviewed by Nika (Nikoloz) Kokhreidze.
