# ESET Mail Security vs KnowBe4 Cloud Email Security: side-by-side comparison (2026) [ESET Mail Security](https://cybersectools.com/tools/eset-mail-security) is a commercial [email security platforms](https://cybersectools.com/categories/email-security-platforms) solution by [ESET](https://cybersectools.com/companies/eset). [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. 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 | | ESET Mail Security | KnowBe4 Cloud Email Security | |---|---|---| | Pricing model | Commercial | Commercial | | Category | Email Security Platforms | Email Security Platforms | | Verified | No | No | | Deployment type | On-Premises | Cloud | | Company size fit | SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise | | Company | ESET | KnowBe4 | | Headquarters | – | – | ### Use cases and capabilities | | ESET Mail Security | KnowBe4 Cloud Email Security | |---|---|---| | Microsoft 365 | Yes | Yes | | Ransomware Prevention | Yes | Yes | ### Core features **ESET Mail 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 **ESET Mail Security** 4 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. ## Which one fits you Based on what each listing shows: deployment, company size, price and open source. - [ESET Mail Security](https://cybersectools.com/tools/eset-mail-security) fits if you need to run it on your own servers. - [KnowBe4 Cloud Email Security](https://cybersectools.com/tools/knowbe4-cloud-email-security) fits if you want a cloud product. ## ESET Mail Security vs KnowBe4 Cloud Email Security FAQ Common questions when comparing ESET Mail Security vs KnowBe4 Cloud Email Security for email security platforms. ### What is the difference between ESET Mail Security and KnowBe4 Cloud Email Security? **ESET Mail Security**: Email security for Microsoft Exchange servers with anti-spam and anti-malware. Built by ESET. **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 ESET Mail Security and KnowBe4 Cloud Email Security? **ESET Mail Security** is made by ESET. **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 ESET Mail Security a good alternative to KnowBe4 Cloud Email Security? Often, yes. ESET Mail Security and KnowBe4 Cloud Email Security are both Email Security Platforms products, and both cover Microsoft 365, Ransomware Prevention. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [ESET Mail Security vs ConnectWise Email Security](https://cybersectools.com/compare/connectwise-email-security-vs-eset-mail-security) - [ESET Mail Security vs Cellopoint Cloud Email Security Solution](https://cybersectools.com/compare/cellopoint-cloud-email-security-solution-vs-eset-mail-security) - [ESET Mail Security vs ESET Cloud Office Security](https://cybersectools.com/compare/eset-mail-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 ESET Mail Security alternatives](https://cybersectools.com/alternatives/eset-mail-security) - [See all KnowBe4 Cloud Email Security alternatives](https://cybersectools.com/alternatives/knowbe4-cloud-email-security) --- Source: https://cybersectools.com/compare/eset-mail-security-vs-knowbe4-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/eset-mail-security.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on ESET Mail 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