Abnormal AI

What is Abnormal AI?

Abnormal AI is an AI native email security platform that models normal behaviour to stop advanced attacks like BEC and account takeover, API integrated with Microsoft 365 and Google, highly rated and fast growing. Founded in 2018, it connects to cloud email via API (no gateway to deploy) and builds a behavioural model of each organisation's normal communication, people, relationships and patterns, so it can detect anomalies that signal socially engineered attacks, business email compromise, vendor fraud, account takeover and advanced phishing, that signature based tools miss, and remediate them automatically. Known for stopping the costliest, most advanced email attacks with AI, and for easy API deployment, Abnormal is highly rated and fast growing. For AI driven behavioural defence, Abnormal AI is a leading choice.

Abnormal's distinction is AI native, behavioural detection of advanced attacks, deployed by API. Rather than filtering with signatures at a gateway, it learns normal behaviour and flags anomalies, catching BEC, vendor fraud and account takeover that others miss, and it deploys in minutes via API inside Microsoft 365 or Google with no mail flow changes. That behavioural AI approach and easy API deployment, with top ratings, set it apart.

Who Abnormal AI is best for

Abnormal AI is best for organisations on Microsoft 365 or Google Workspace that want AI driven behavioural defence against advanced attacks, BEC, vendor fraud, account takeover and advanced phishing, deployed easily via API, often layered on native protection. It suits teams focused on stopping advanced, socially engineered attacks. It is a weaker fit for organisations wanting a traditional gateway with broad control, where Proofpoint or Mimecast fit, email resilience and archiving, or those not on cloud email.

Key features

The core strengths are AI and behavioural modelling of normal communication to detect anomalies and advanced attacks (BEC, vendor fraud, account takeover, advanced phishing), API deployment inside Microsoft 365 and Google with no gateway, and automated detection and remediation. Abnormal offers account takeover protection and clear incident insight. Its behavioural AI, advanced attack detection and easy API deployment are its defining advantages.

Abnormal AI pricing

Abnormal is priced per user per month and quoted, reflecting its AI driven, API based protection, typically layered on cloud email. Pricing suits organisations adding strong advanced threat protection. Costs scale with users. Model your mailboxes. Get details via the Abnormal site.

Integrations and ecosystem

Abnormal integrates via API with Microsoft 365 and Google Workspace, and with the security stack (SIEM, SOAR) for incident handling. Its API integration with cloud email, which lets it deploy in minutes and analyse messages with full context, plus security stack integrations, is a signature strength and a key reason teams adopt it alongside native protection.

Abnormal AI and behavioural detection

AI native behavioural detection of advanced attacks is the signature strength: by modelling each organisation's normal communication and flagging anomalies, Abnormal catches BEC, vendor fraud and account takeover that signature based tools miss, and remediates automatically, deployed easily by API. For organisations focused on stopping the costliest advanced attacks, this is the main reason to choose Abnormal.

Ease of use and support

Abnormal is among the highest rated email security tools, praised for easy API deployment, advanced attack detection and support. Its G2 reviews highlight behavioural AI, ease and stopping BEC, with being an added layer on cloud email (not a full gateway or resilience suite) the main consideration.

Is Abnormal AI worth it?

For organisations on Microsoft 365 or Google that want AI driven behavioural defence against advanced attacks, deployed easily via API, Abnormal AI is an excellent, top rated choice, often layered on native protection. The main caution is that it is an API based advanced threat layer rather than a traditional gateway or resilience suite, so those wanting those may prefer Proofpoint or Mimecast, but for AI driven behavioural defence Abnormal leads.