# KnowBe4 Cloud Email Security vs Sublime Email Security: side-by-side comparison (2026) [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). [Sublime Email Security](https://cybersectools.com/tools/sublime-email-security) is a commercial [email security platforms](https://cybersectools.com/categories/email-security-platforms) solution by [Sublime Security](https://cybersectools.com/companies/sublime-security). 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 | | KnowBe4 Cloud Email Security | Sublime 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 | KnowBe4 | Sublime Security | | Headquarters | – | – | ### Use cases and capabilities | | KnowBe4 Cloud Email Security | Sublime Email Security | |---|---|---| | Microsoft 365 | Yes | – | | Ransomware Prevention | Yes | – | | Natural Language Processing | – | Yes | ### Core features **KnowBe4 Cloud Email Security** 10 features listed. Sign in on the page to see them. **Sublime Email Security** 10 features listed. Sign in on the page to see them. ### Integrations **KnowBe4 Cloud Email Security** 5 integrations listed. Sign in on the page to see them. **Sublime Email Security** 2 integrations listed. Sign in on the page to see them. ## KnowBe4 Cloud Email Security vs Sublime Email Security FAQ Common questions when comparing KnowBe4 Cloud Email Security vs Sublime Email Security for email security platforms. ### What is the difference between KnowBe4 Cloud Email Security and Sublime Email Security? **KnowBe4 Cloud Email Security**: AI-driven email security platform for Microsoft 365 inbound/outbound threats. Built by KnowBe4. **Sublime Email Security**: AI-powered email security platform with agentic automation and detection. Built by Sublime Security. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes KnowBe4 Cloud Email Security and Sublime Email Security? **KnowBe4 Cloud Email Security** is made by KnowBe4. **Sublime Email Security** is made by Sublime Security. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit. ### Is KnowBe4 Cloud Email Security a good alternative to Sublime Email Security? Often, yes. KnowBe4 Cloud Email Security and Sublime Email Security are both Email Security Platforms products. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [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) - [Sublime Email Security vs ConnectWise Email Security](https://cybersectools.com/compare/connectwise-email-security-vs-sublime-email-security) - [Sublime Email Security vs Cellopoint Cloud Email Security Solution](https://cybersectools.com/compare/cellopoint-cloud-email-security-solution-vs-sublime-email-security) - [Sublime Email Security vs ESET Cloud Office Security](https://cybersectools.com/compare/eset-cloud-office-security-vs-sublime-email-security) ## Alternatives to each - [See all KnowBe4 Cloud Email Security alternatives](https://cybersectools.com/alternatives/knowbe4-cloud-email-security) - [See all Sublime Email Security alternatives](https://cybersectools.com/alternatives/sublime-email-security) --- Source: https://cybersectools.com/compare/knowbe4-cloud-email-security-vs-sublime-email-security For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/knowbe4-cloud-email-security.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on KnowBe4 Cloud Email Security and Sublime 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