Inbound Email Security
Stop the Attacks Your Gateway Was Never Built to Catch
Inbound Email Security was built for the attacks gateways can't see: no payload, no prior signature, nothing for a rule to flag. Powered by Attune 1.0, it builds a behavioral baseline for every employee and vendor, then catches anything that deviates.
More threats detected than prior SEG in the first 90 days of deployment.
Accelleron (4,000+ mailboxes)
Abnormal uncovers an average of >1,200 attacks per 1,000 mailboxes each month that bypassed upstream gateways.
Abnormal internal data, June 2026
Average cost of a single successful BEC attack.
2024 Medius Financial Census, 2024
The Challenge
Advanced Attacks Have Outrun the Gateway
Why Abnormal
We Know Your Normal, So We Catch What Others Miss
Gateways see headers, content, and attachments. Abnormal sees the full behavioral picture of every identity.
We See What Others Can't
Gateways inspect inbound mail. Abnormal reads authentication events, calendar activity, and internal threads: signals no gateway can access.
Per-Identity Baselines, Not Generic Threat Profiles
Attune 1.0 builds a behavioral fingerprint for every employee and vendor, so attackers are measured against the real baseline, not a population average.
Precise Enough to Run on Autopilot
Threats are removed before users engage. Every action includes which signals fired and which baseline was violated.
Built for the Modern Security Team
Detection, Remediation, and Investigation on Autopilot
Behavioral AI Detection
Analyzes identity, behavioral, and content signals per message to detect novel BEC, AI-generated lures, and payload-free attacks before they reach the inbox.
Learn MoreAttack Remediation
Automatically removes malicious messages from inboxes before users can interact with them, replacing manual triage with hands-free protection.
Learn MoreCalendar Invite Remediation
Automatically detects and removes malicious calendar invites before users can engage with them.
Learn MoreThreat Log
Every message Abnormal has evaluated, flagged, or actioned, in one view, filterable by threat type, time range, and verdict for fast investigation.
Learn MoreDetection 360
Turns every analyst-submitted miss and false positive into a tracked investigation with per-customer detection rules and full visibility into how submissions improve detection over time.
Learn MoreSearch & Respond
Search across Microsoft 365 and Google Workspace simultaneously, view full message context, and remediate individually or in bulk from a single console.
Learn MoreCustom AI Models
Describe organization-specific patterns in plain language and create dedicated models without writing rules or code.
Learn MoreCustom Rules
Enforce precise, organization-specific policies across 50+ message attributes using familiar rule logic.
Learn MoreQuarantine Release
Review and release quarantined mail from Abnormal and Microsoft in one place, no bouncing between portals, no split workflows.
Learn MoreWe Prove What Others Claim
Every vendor claims behavioral AI. There's one test that matters: can they show you the attacks your current solution is missing, right now, in your environment? Every Abnormal POV generates head-to-head miss data against the incumbent. If we find nothing, we'll say so.
Glass Box, Not Black Box
Every detection includes in-depth explanations: which signals fired, what the baseline was, why it's anomalous. Analysts validate verdicts without recreating the investigation.
Native Email Handles the Known. We Handle the Unknown
Hundreds of attacks bypass native defenses per month on average. Abnormal + Microsoft/Google is the complete stack. Together they replace any SEG.
A Consolidation Play, Not a New Line Item
Most customers don't add budget, they reallocate it. Customers can save hundreds of thousands per year in SEG licensing, and free multiple FTEs from manual remediation.
Behavioral AI at the Core, Control When You Need It
Behavioral AI understands what's normal across your organization. Your security team knows the policies, priorities, and context unique to your business. Control Center gives teams a way to put that knowledge into action alongside the behavioral AI already protecting them.
Over 25% of the Fortune 500 Trust Abnormal AI to Make Automated, Critical Security Decisions
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Customer Voice
What Security Leaders Say
“Abnormal's automation gives our analysts time back to work on other projects, and the fact that it's API-based gives us flexibility to tie in other applications and their data.”
John Roeser
Senior Manager, Information Security, Domino's
“Our goals are to get away from being so reliant on human judgment and leverage AI to be proactive. Abnormal helps us with those goals.”
Corey Kaemming
Senior Director, Information Security, Valvoline
Abnormal powers over 4,500 customers, including over 25% of the Fortune 500.
FAQ
Related Resources
See What Your Gateway Is Missing
Deploy in 60 seconds via API. No MX changes. Start catching the attacks that cost the most.