Abnormal Inbound Email Security is a commercial email security platforms solution by Abnormal Security. ESET Mail Security is a commercial email security platforms solution by ESET. Features, integrations, deployment and the company behind each one, side by side.
What our shortlists say about the one we picked.
Best for: Microsoft 365 or Google teams fighting BEC
It belongs here as the API option, because it judges each message against normal behavior and needs no rules to maintain. That suits you if vendor and payment fraud worry you more than mass malware. Since it does not sit in the mail path, decide whether you pair it with a gateway or with the filtering your mail platform already has.
From Best Email Security Solutions for Business, Fall 2026
Reviewed by Nika (Nikoloz) Kokhreidze.
AI-powered email security platform detecting advanced threats via behavioral analysis
Email security for Microsoft Exchange servers with anti-spam and anti-malware
See more solutions in this category, or build a security stack from your picks.
Based on what each listing shows: deployment, company size, price and open source.
Abnormal Inbound Email Security fits if you want a cloud product.
ESET Mail Security fits if you need to run it on your own servers.
Common questions when comparing Abnormal Inbound Email Security vs ESET Mail Security for email security platforms.
Abnormal Inbound Email Security: AI-powered email security platform detecting advanced threats via behavioral analysis. Built by Abnormal Security.
ESET Mail Security: Email security for Microsoft Exchange servers with anti-spam and anti-malware. Built by ESET.
The table above shows where their features, integrations, deployment and company size fit differ.
Abnormal Inbound Email Security is made by Abnormal Security. ESET Mail Security is made by ESET. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.
Often, yes. Abnormal Inbound Email Security and ESET Mail Security are both Email Security Platforms products. Use the table above to see where features, deployment and company size fit differ.
Need the answer fast? Best Email Security Solutions for Business picks Proofpoint Core Email Protection, Microsoft Defender for Office 365, Mimecast Advanced Email Security and 4 more.See the shortlist
