# KnowBe4 Cloud Email Security vs Sendmarc Breach Detection: 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). [Sendmarc Breach Detection](https://cybersectools.com/tools/sendmarc-breach-detection) is a commercial [email security platforms](https://cybersectools.com/categories/email-security-platforms) solution by [Sendmarc](https://cybersectools.com/companies/sendmarc). 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 | Sendmarc Breach Detection | |---|---|---| | 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 | Sendmarc | | Headquarters | – | – | ### Use cases and capabilities | | KnowBe4 Cloud Email Security | Sendmarc Breach Detection | |---|---|---| | Microsoft 365 | Yes | – | | Ransomware Prevention | Yes | – | | Dark Web Monitoring | – | Yes | | Data Breach | – | Yes | | Alerting | – | Yes | | PII | – | Yes | ### Core features **KnowBe4 Cloud Email Security** 10 features listed. Sign in on the page to see them. **Sendmarc Breach Detection** 8 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. **Sendmarc Breach Detection** 7 integrations listed. Sign in on the page to see them. ## KnowBe4 Cloud Email Security vs Sendmarc Breach Detection FAQ Common questions when comparing KnowBe4 Cloud Email Security vs Sendmarc Breach Detection for email security platforms. ### What is the difference between KnowBe4 Cloud Email Security and Sendmarc Breach Detection? **KnowBe4 Cloud Email Security**: AI-driven email security platform for Microsoft 365 inbound/outbound threats, built by KnowBe4. **Sendmarc Breach Detection**: Monitors dark web and other sources for leaked credentials and breached data, built by Sendmarc. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes KnowBe4 Cloud Email Security and Sendmarc Breach Detection? **KnowBe4 Cloud Email Security** is made by KnowBe4. **Sendmarc Breach Detection** is made by Sendmarc. 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 Sendmarc Breach Detection? Often, yes. KnowBe4 Cloud Email Security and Sendmarc Breach Detection 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) - [Sendmarc Breach Detection vs ConnectWise Email Security](https://cybersectools.com/compare/connectwise-email-security-vs-sendmarc-breach-detection) - [Sendmarc Breach Detection vs Cellopoint Cloud Email Security Solution](https://cybersectools.com/compare/cellopoint-cloud-email-security-solution-vs-sendmarc-breach-detection) - [Sendmarc Breach Detection vs ESET Cloud Office Security](https://cybersectools.com/compare/eset-cloud-office-security-vs-sendmarc-breach-detection) ## Alternatives to each - [See all KnowBe4 Cloud Email Security alternatives](https://cybersectools.com/alternatives/knowbe4-cloud-email-security) - [See all Sendmarc Breach Detection alternatives](https://cybersectools.com/alternatives/sendmarc-breach-detection) --- Source: https://cybersectools.com/compare/knowbe4-cloud-email-security-vs-sendmarc-breach-detection 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 Sendmarc Breach Detection: 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