Abnormal AI
abnormal.ai
AI-based email security that stops targeted attacks.
Quick Information
- Category:
- Cybersecurity
- Pricing:
- Contact Sales
- Platforms:
- Cloud, Web
- Free Plan:
- No
- API Available:
- Yes
- Last Verified:
- October 2026
What Is Abnormal AI?
Abnormal AI is a behavioural AI email security platform that targets phishing, business email compromise and account takeover. It is private. The last priced round was a $250 million Series D in August 2024 led by Wellington Management at a $5.1 billion post-money valuation, and CNBC's 2026 Disruptor 50 list also cites $5.1 billion and $546 million in total funding. Totals differ by tracker, from about $520 million to $544 million, and some secondary-market sources say no priced round or trade has surfaced since August 2024. Nasdaq Private Market showed a price of $18.89 per share on October 5, 2026, while another site showed $16.20, so estimates conflict. There is no IPO, and Forge says the company has not endorsed a plan to go public.
A secondary-market aggregator reports annual recurring revenue above $200 million and more than 4,500 customers including over a quarter of the Fortune 500, which I treat cautiously. Abnormal's own pricing URL returned a not-found error when I tried to read it, and I found no per-mailbox pricing, so assume a quote based on mailbox count and modules. The product typically sits alongside Microsoft or Google email rather than replacing the gateway, so factor that into total cost. Ask for a proof of concept that scores historic mail from your own tenant.
Abnormal suits mid-to-large organisations that want API-based, AI-driven detection of socially engineered email. Compare Proofpoint, Mimecast and Sublime Security. Browse the Cybersecurity tools directory for more.
What Can You Use Abnormal AI For?
Business email compromise defense
Behavioural AI.
Account takeover detection
API-based.
Abnormal AI Features
- $5.1B valuation — Series D, August 2024.
- API-based deployment — Alongside email platform.
- No IPO yet — Private.
Who Is Abnormal AI For?
- Mid-to-large enterprises — Targeted attack defense.
- Microsoft 365 and Google users — API integration.
Abnormal AI Pros & Limitations
What We Like
- Behavioural AI approach
- Strong funding
- Large customer base reported
Limitations
- No published pricing
- Revenue figures are secondary
- Typically an add-on layer
Abnormal AI Pricing
| Plan | Price | Main Features |
|---|---|---|
| Platform | Custom quote (no published pricing) | Likely by mailbox count and modules |
Pricing was last verified October 2026. Check the official website for the latest pricing.
AI Listing Jungle Ranking
- Global Rank:
- #1181
- Overall Score:
- 23.1/100
- Monthly Users:
- –
- Rank Change:
- ▲ 480
This ranking reflects AI Listing Jungle's own independent scoring methodology and is not an endorsement by Abnormal AI or its company. How Our Rankings Work
Frequently Asked Questions
Is Abnormal public?
No, private.
Valuation?
$5.1B in August 2024.
Pricing?
Quote only.
Total funding?
About $520M-$546M, by source.
Our Take
A leading AI email security vendor.
Pilot with your own mail.
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