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Abnormal

Abnormal is an enterprise email security platform that detects inbound threats using identity graphs and behavioural baselines.

Our take: Abnormal AI (formerly Abnormal Security, now at abnormal.ai) is a behavioural-AI email security platform built exclusively for enterprises.

Best forCybersecurity Teams
ReviewedPricing: Paid
7.4 out of 105 criteria · see breakdown
Try AbnormalCustom; ~$20–$35/mailbox/yr (enterprise)
The bottom line

Best-in-class AI email security for mid-to-large enterprises — but expect custom enterprise contracts, not off-the-shelf pricing.

Our score

Reviewed by the Conversion Gems editorial team. Hover a facet to focus it; click to pin.Tap a facet to focus it.

Community ratings

Shown for context only. Our score is independent.

G2
4.8 out of 5
70+ reviews

4.8 / 5 aggregate · across 1 source

Third-party ratings shown verbatim; aggregate weighted by review volume.

What it is, and why we rate it

One line each. Open a row for detail.

What it really isAbnormal AI — enterprise AI-powered email security platform detecting phishing, BEC, and account takeover.
Our takeAbnormal AI (formerly Abnormal Security, now at abnormal.ai) is a behavioural-AI email security platform built exclusively for enterprises.
Abnormal's core product is inbound email threat detection using identity graphs and behavioural baselines. Abnormal is custom-quoted enterprise software with no self-serve plans; typical annual contracts start around $20,000 for ~1,000 mailboxes at $20–$35/mailbox/year.
Why we rate itAbnormal's behavioural-AI approach catches sophisticated BEC and supply-chain phishing that rule-based and signature tools routinely miss.
The API-based deployment (no MX record change) means go-live in hours, not weeks, and the AI Security Mailbox dramatically cuts SOC alert volume.
The catchPurely enterprise; no SMB or self-serve option, no public pricing, and meaningful hidden costs (platform fee, professional services, annual uplift).
The platform detects threats but does not remediate credential theft or correlate with endpoint signals.

Best / not good for

Best for
  • Enterprise security teams combating BEC and spear-phishing at scale
  • Organisations already on Microsoft 365 or Google Workspace wanting API-native email protection
  • SOC teams looking to reduce phishing-triage alert volume
Not good for
  • SMBs or teams with fewer than ~500 mailboxes (economics don't justify the contract size)
  • Teams needing endpoint or credential-remediation capabilities beyond email
  • Buyers who require transparent, self-serve or monthly billing
Trade-offs

Friction report

Trade-offs to know before signing up.

  1. Time to value
    Moderate: API-based deployment is fast (no MX change), but onboarding, baselining, and contract negotiation add weeks before full value is realised.
  2. Scale breakpoint
    Per-mailbox true-ups and mandatory seat expansions at renewal make costs unpredictable as headcount grows; renewal uplifts of 5–7%/yr compound quickly.
  3. Walled garden
    Moderate: detections and workflows are proprietary; some SIEM/SOAR integrations exist, but behavioural baselines and AI models are not exportable.
Still a fit?
If none of these block you, try it on the official site.
Try Abnormal

A look inside

Abnormal product screenshot

Frequently Asked Questions

What solutions does Abnormal provide for AI-driven email security and fraud prevention?

Abnormal provides AI-driven email security and fraud prevention by detecting malicious content and phishing attempts.

What features does Abnormal provide for AI email security?

Abnormal provides AI email security by detecting phishing, fraud, and malicious content in emails.

What tools does Abnormal provide for AI security and email protection?

Abnormal provides AI security and email protection tools, including phishing detection, threat monitoring, and anomaly detection.

How does Abnormal assist in AI email security?

Abnormal assists in AI email security by detecting phishing, spam, and malicious content in email communications.

What can Abnormal do to improve AI email security?

Abnormal improves AI email security by detecting phishing, spam, and malicious content automatically.

Alternatives

  • Step up

    Proofpoint Enterprise for broader DLP, archiving, and compliance beyond email security.

  • Lighter alternative

    Microsoft Defender for Office 365 (built-in) for SMBs or teams needing baseline email protection without a separate vendor.

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Conversion Gems independently reviews every tool.

Tags

#FraudDetectionSoftware#CybersecurityAI#RiskManagement

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