Category
AI email security software: what they are and who makes them
gateway-based filters, api add-ons for microsoft 365 and google, behavioral and human-risk platforms, suite-bundled protection: Libraesva Email Security, IRONSCALES, Hornetsecurity 365 Total Protection through Darktrace / EMAIL.
Types of AI email security software
Gateway-based filters
Libraesva, Mimecast and Hornetsecurity route mail through their own servers first and scan before delivery. They give continuity and archiving, but they need an MX change and are harder to test than a mailbox add-on, so plan a cutover window.
API add-ons for Microsoft 365 and Google
IRONSCALES, Abnormal AI, Barracuda and Check Point connect to the mail platform by API, with no MX change stated. Setup takes minutes according to the vendors, and they pull malicious messages back after delivery, which suits teams that keep an existing filter or want a quick trial.
Behavioral and human-risk platforms
Abnormal AI and Egress score what normal looks like for each sender and employee, then react to deviations or adapt policy per person. They target payload-free fraud, vendor impersonation and outbound mistakes that signature checks and attachment scanning never see.
Suite-bundled protection
Microsoft Defender for Office 365 and Proofpoint sit inside wider portfolios. Defender comes through Microsoft licensing at a published per-user price, while Proofpoint sells a large product family by quote and fits teams that already employ security analysts and can scope a contract covering several modules.
Facts at a glance
| Tool | Publisher | Based in | Access |
|---|---|---|---|
| Libraesva Email Security | LibraCyber S.p.A. (Libraesva) | Italy | Trial |
| IRONSCALES | IRONSCALES | United States | Trial + API |
| Hornetsecurity 365 Total Protection | Hornetsecurity GmbH | Germany | Paid |
| Egress (KnowBe4) | Egress, a KnowBe4 company | United States | Paid |
| Abnormal AI | Abnormal AI, Inc. | United States | Paid |
| Barracuda Email Protection | Barracuda Networks | United States | Trial |
| Check Point Harmony Email & Collaboration | Check Point Software Technologies | Israel | Trial |
| Mimecast Advanced Email Security | Mimecast | United Kingdom | Paid + API |
| Proofpoint Core Email Protection | Proofpoint, Inc. | United States | Paid |
| Microsoft Defender for Office 365 | Microsoft | United States | Paid |
| Darktrace / EMAIL | Darktrace | United Kingdom | Paid |
