# Abnormal Inbound Email Security vs KnowBe4 Cloud Email Security: side-by-side comparison (2026) [Abnormal Inbound Email Security](https://cybersectools.com/tools/abnormal-security-cloud-email-security) is a commercial [email security platforms](https://cybersectools.com/categories/email-security-platforms) solution by [Abnormal Security](https://cybersectools.com/companies/abnormal-security). [KnowBe4 Cloud Email Security](https://cybersectools.com/tools/knowbe4-cloud-email-security) is a commercial [email security platforms](https://cybersectools.com/categories/email-security-platforms) solution by [KnowBe4](https://cybersectools.com/companies/knowbe4). Features, integrations, deployment and the company behind each one, side by side. ## Our take What our shortlists say about the one we picked. ### [Abnormal Inbound Email Security](https://cybersectools.com/tools/abnormal-security-cloud-email-security) Best for: SOC teams wanting API-native BEC detection without gateway management The limitation is scope. Abnormal is an inbound email security solution. It does not do DLP, archiving, DMARC enforcement, or awareness training. If you need a single platform to cover your entire email security program, you will need to pair it with other solutions. It also currently focuses on Microsoft email platforms, so Google Workspace coverage is more limited. For organizations that have already solved gateway filtering and are specifically struggling with BEC and VEC getting through, Abnormal is the most targeted solution in this list. From [Best Email Security Solutions for Business](https://cybersectools.com/shortlists/best-email-security-platforms), Fall 2026. Reviewed by [Nika (Nikoloz) Kokhreidze](https://cybersectools.com/about). Need the answer fast? [Best Email Security Solutions for Business](https://cybersectools.com/shortlists/best-email-security-platforms) picks Proofpoint Core Email Protection, Microsoft Defender for Office 365, Mimecast Advanced Email Security and 4 more. ## Side-by-side comparison | | Abnormal Inbound Email Security | KnowBe4 Cloud Email Security | |---|---|---| | Pricing model | Commercial | Commercial | | Category | Email Security Platforms | Email Security Platforms | | Verified | No | No | | Deployment type | Cloud | Cloud | | Company size fit | SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise | | Company | Abnormal Security | KnowBe4 | | Headquarters | – | – | ### Use cases and capabilities | | Abnormal Inbound Email Security | KnowBe4 Cloud Email Security | |---|---|---| | Microsoft 365 | – | Yes | | Ransomware Prevention | – | Yes | ### Core features **Abnormal Inbound Email Security** 10 features listed. Sign in on the page to see them. **KnowBe4 Cloud Email Security** 10 features listed. Sign in on the page to see them. ### Integrations **Abnormal Inbound Email Security** 9 integrations listed. Sign in on the page to see them. **KnowBe4 Cloud Email Security** 5 integrations listed. Sign in on the page to see them. ## Abnormal Inbound Email Security vs KnowBe4 Cloud Email Security FAQ Common questions when comparing Abnormal Inbound Email Security vs KnowBe4 Cloud Email Security for email security platforms. ### What is the difference between Abnormal Inbound Email Security and KnowBe4 Cloud Email Security? **Abnormal Inbound Email Security**: AI-powered email security platform detecting advanced threats via behavioral analysis, built by Abnormal Security. **KnowBe4 Cloud Email Security**: AI-driven email security platform for Microsoft 365 inbound/outbound threats, built by KnowBe4. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes Abnormal Inbound Email Security and KnowBe4 Cloud Email Security? **Abnormal Inbound Email Security** is made by Abnormal Security. **KnowBe4 Cloud Email Security** is made by KnowBe4. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit. ### Is Abnormal Inbound Email Security a good alternative to KnowBe4 Cloud Email Security? Often, yes. Abnormal Inbound Email Security and KnowBe4 Cloud Email Security are both Email Security Platforms products. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [Abnormal Inbound Email Security vs ConnectWise Email Security](https://cybersectools.com/compare/abnormal-security-cloud-email-security-vs-connectwise-email-security) - [Abnormal Inbound Email Security vs Cellopoint Cloud Email Security Solution](https://cybersectools.com/compare/abnormal-security-cloud-email-security-vs-cellopoint-cloud-email-security-solution) - [Abnormal Inbound Email Security vs ESET Cloud Office Security](https://cybersectools.com/compare/abnormal-security-cloud-email-security-vs-eset-cloud-office-security) - [KnowBe4 Cloud Email Security vs ConnectWise Email Security](https://cybersectools.com/compare/connectwise-email-security-vs-knowbe4-cloud-email-security) - [KnowBe4 Cloud Email Security vs Cellopoint Cloud Email Security Solution](https://cybersectools.com/compare/cellopoint-cloud-email-security-solution-vs-knowbe4-cloud-email-security) - [KnowBe4 Cloud Email Security vs ESET Cloud Office Security](https://cybersectools.com/compare/eset-cloud-office-security-vs-knowbe4-cloud-email-security) ## Alternatives to each - [See all Abnormal Inbound Email Security alternatives](https://cybersectools.com/alternatives/abnormal-security-cloud-email-security) - [See all KnowBe4 Cloud Email Security alternatives](https://cybersectools.com/alternatives/knowbe4-cloud-email-security) --- Source: https://cybersectools.com/compare/knowbe4-cloud-email-security-vs-abnormal-security-cloud-email-security For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/abnormal-security-cloud-email-security.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on Abnormal Inbound Email Security and KnowBe4 Cloud Email Security: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=compare-md