# KnowBe4 Cloud Email Security alternatives and competitors (2026) The closest KnowBe4 Cloud Email Security alternatives are [Fortra Email Security & Anti-Phishing](https://cybersectools.com/tools/fortra-email-security-and-anti-phishing), [ConnectWise Email Security](https://cybersectools.com/tools/connectwise-email-security) and [Cellopoint Cloud Email Security Solution](https://cybersectools.com/tools/cellopoint-cloud-email-security-solution). Picking a KnowBe4 Cloud Email Security alternative comes down to fit: Email Security Platforms coverage, your environment, your integrations and your budget. So each option below shows what it covers, how it deploys, its pricing model and the company behind it. 43 alternatives. Closest matches: Fortra Email Security & Anti-Phishing, ConnectWise Email Security, Cellopoint Cloud Email Security Solution. ## The product [KnowBe4 Cloud Email Security](https://cybersectools.com/tools/knowbe4-cloud-email-security) by KnowBe4 AI-driven email security platform for Microsoft 365 inbound/outbound threats Category: [Email & Messaging Security](https://cybersectools.com/categories/email-security) · Pricing model: Commercial 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. ## KnowBe4 Cloud Email Security alternatives and competitors KnowBe4 Cloud Email Security is a commercial [Email Security Platforms](https://cybersectools.com/categories/email-security-platforms) solution made by KnowBe4. The closest matches by shared tags and NIST CSF 2.0 coverage are [Fortra Email Security & Anti-Phishing](https://cybersectools.com/tools/fortra-email-security-and-anti-phishing), [ConnectWise Email Security](https://cybersectools.com/tools/connectwise-email-security), [Cellopoint Cloud Email Security Solution](https://cybersectools.com/tools/cellopoint-cloud-email-security-solution), [ESET Cloud Office Security](https://cybersectools.com/tools/eset-cloud-office-security), and [Bitdefender GravityZone Extended Email Security](https://cybersectools.com/tools/bitdefender-gravityzone-extended-email-security). All 43 alternatives on this page are ranked the same way. ## The closest KnowBe4 Cloud Email Security alternatives These 8 solutions overlap most with KnowBe4 Cloud Email Security. Each one says what the product does and, when the overlap is big enough, which capabilities it shares. ### 1. [Fortra Email Security & Anti-Phishing](https://cybersectools.com/tools/fortra-email-security-and-anti-phishing) (Featured) Email security platform protecting against phishing, BEC, and data loss [Email Security Platforms](https://cybersectools.com/categories/email-security-platforms) · Commercial Key features: DMARC email authentication and enforcement, Business email compromise detection, Spear phishing protection, Account takeover detection, Data loss prevention for sensitive data [Fortra Email Security & Anti-Phishing alternatives](https://cybersectools.com/alternatives/fortra-email-security-and-anti-phishing) · [KnowBe4 Cloud Email Security vs Fortra Email Security & Anti-Phishing](https://cybersectools.com/compare/fortra-email-security-and-anti-phishing-vs-knowbe4-cloud-email-security) ### 2. [ConnectWise Email Security](https://cybersectools.com/tools/connectwise-email-security) Email security platform with AI threat detection, BEC protection, and DLP [Email Security Platforms](https://cybersectools.com/categories/email-security-platforms) · Commercial Key features: 10 listed. See them on the [ConnectWise Email Security page](https://cybersectools.com/tools/connectwise-email-security#features). [ConnectWise Email Security alternatives](https://cybersectools.com/alternatives/connectwise-email-security) · [KnowBe4 Cloud Email Security vs ConnectWise Email Security](https://cybersectools.com/compare/connectwise-email-security-vs-knowbe4-cloud-email-security) ### 3. [Cellopoint Cloud Email Security Solution](https://cybersectools.com/tools/cellopoint-cloud-email-security-solution) Cloud-based email security platform protecting against phishing, ransomware, BEC [Email Security Platforms](https://cybersectools.com/categories/email-security-platforms) · Commercial Key features: 8 listed. See them on the [Cellopoint Cloud Email Security Solution page](https://cybersectools.com/tools/cellopoint-cloud-email-security-solution#features). [Cellopoint Cloud Email Security Solution alternatives](https://cybersectools.com/alternatives/cellopoint-cloud-email-security-solution) · [KnowBe4 Cloud Email Security vs Cellopoint Cloud Email Security Solution](https://cybersectools.com/compare/cellopoint-cloud-email-security-solution-vs-knowbe4-cloud-email-security) ### 4. [ESET Cloud Office Security](https://cybersectools.com/tools/eset-cloud-office-security) Cloud email security for Microsoft 365 and Google Workspace applications [Email Security Platforms](https://cybersectools.com/categories/email-security-platforms) · Commercial Key features: 10 listed. See them on the [ESET Cloud Office Security page](https://cybersectools.com/tools/eset-cloud-office-security#features). [ESET Cloud Office Security alternatives](https://cybersectools.com/alternatives/eset-cloud-office-security) · [KnowBe4 Cloud Email Security vs ESET Cloud Office Security](https://cybersectools.com/compare/eset-cloud-office-security-vs-knowbe4-cloud-email-security) ### 5. [Bitdefender GravityZone Extended Email Security](https://cybersectools.com/tools/bitdefender-gravityzone-extended-email-security) Cloud-native email security platform with SEG and API-based protection [Email Security Platforms](https://cybersectools.com/categories/email-security-platforms) · Commercial Key features: 10 listed. See them on the [Bitdefender GravityZone Extended Email Security page](https://cybersectools.com/tools/bitdefender-gravityzone-extended-email-security#features). [Bitdefender GravityZone Extended Email Security alternatives](https://cybersectools.com/alternatives/bitdefender-gravityzone-extended-email-security) · [KnowBe4 Cloud Email Security vs Bitdefender GravityZone Extended Email Security](https://cybersectools.com/compare/bitdefender-gravityzone-extended-email-security-vs-knowbe4-cloud-email-security) ### 6. [Mesh 365](https://cybersectools.com/tools/mesh-365) API-based email security platform for Microsoft 365 environments [Email Security Platforms](https://cybersectools.com/categories/email-security-platforms) · Commercial Key features: 10 listed. See them on the [Mesh 365 page](https://cybersectools.com/tools/mesh-365#features). [Mesh 365 alternatives](https://cybersectools.com/alternatives/mesh-365) · [KnowBe4 Cloud Email Security vs Mesh 365](https://cybersectools.com/compare/knowbe4-cloud-email-security-vs-mesh-365) ### 7. [INKY Behavioral Email Security Platform](https://cybersectools.com/tools/inky-behavioral-email-security-platform) Behavioral email security platform protecting inbound, outbound, and internal mail [Email Security Platforms](https://cybersectools.com/categories/email-security-platforms) · Commercial Key features: 10 listed. See them on the [INKY Behavioral Email Security Platform page](https://cybersectools.com/tools/inky-behavioral-email-security-platform#features). [INKY Behavioral Email Security Platform alternatives](https://cybersectools.com/alternatives/inky-behavioral-email-security-platform) · [KnowBe4 Cloud Email Security vs INKY Behavioral Email Security Platform](https://cybersectools.com/compare/inky-behavioral-email-security-platform-vs-knowbe4-cloud-email-security) ### 8. [Broadcom Symantec Email Security](https://cybersectools.com/tools/broadcom-symantec-email-security) Enterprise email security platform for cloud and on-premise deployments [Email Security Platforms](https://cybersectools.com/categories/email-security-platforms) · Commercial Key features: 10 listed. See them on the [Broadcom Symantec Email Security page](https://cybersectools.com/tools/broadcom-symantec-email-security#features). [Broadcom Symantec Email Security alternatives](https://cybersectools.com/alternatives/broadcom-symantec-email-security) · [KnowBe4 Cloud Email Security vs Broadcom Symantec Email Security](https://cybersectools.com/compare/broadcom-symantec-email-security-vs-knowbe4-cloud-email-security) ## All 43 products like KnowBe4 Cloud Email Security The 8 above, plus: - [ID Agent Graphus](https://cybersectools.com/tools/id-agent-graphus): AI-powered anti-phishing platform for Microsoft 365 & Google Workspace. (Commercial) - [Upfort](https://cybersectools.com/tools/upfort): Unified AI-powered cybersecurity & cyber insurance platform for SMBs. (Commercial) - [Microsoft Defender for Office 365](https://cybersectools.com/tools/microsoft-defender-for-office-365): Email and collaboration security for Microsoft 365 environments (Commercial) - [Fortinet FortiMail Email and Workspace Security](https://cybersectools.com/tools/fortinet-fortimail-email-security): AI-powered email security platform protecting against phishing, BEC, and ATO (Commercial) - [SorbSecurity Cloud Email Security](https://cybersectools.com/tools/sorbsecurity-cloud-email-security): Cloud-based email security platform protecting against phishing & ransomware (Commercial) - [Mimecast Advanced Email Security](https://cybersectools.com/tools/mimecast-advanced-email-security): Email security platform protecting M365 & Google Workspace from threats (Commercial) - [MX Layer Email Security](https://cybersectools.com/tools/mx-layer-email-security): Cloud-based email security platform with AI-powered threat detection (Commercial) - [OPSWAT MetaDefender Email Security](https://cybersectools.com/tools/opswat-metadefender-email-security): Email security platform protecting against phishing, malware, and exploits (Commercial) - [VIPRE Integrated Email Security (IES)](https://cybersectools.com/tools/vipre-integrated-email-security-ies): Email security platform for Microsoft 365 with AI-based threat detection (Commercial) - [Cybersentriq MX Email Threat Protection](https://cybersectools.com/tools/cybersentriq-mx-email-threat-protection): MX-based email security platform using AI to block spam, phishing & malware (Commercial) - [SpamExperts Incoming Email Filtering](https://cybersectools.com/tools/spamexperts-incoming-email-filtering): Email filtering service protecting against spam, viruses, and phishing. (Commercial) - [Vircom Email Security](https://cybersectools.com/tools/vircom-email-security): Email security platform enhanced with multi-tenant mgmt & automation tools (Commercial) - [Mailinblack U-Cyber 360°](https://cybersectools.com/tools/mailinblack-u-cyber-360): Comprehensive email security & human risk mgmt platform with AI-powered protection (Commercial) - [SpamTitan](https://cybersectools.com/tools/spamtitan): Cloud-based anti-spam and antivirus email filtering with AI threat detection. (Commercial) - [Ocean Agentic Email Security Platform](https://cybersectools.com/tools/ocean-agentic-email-security-platform): Agentic AI email security platform that investigates emails pre-delivery. (Commercial) - [Hornetsecurity](https://cybersectools.com/tools/hornetsecurity): Cloud security platform for M365 covering email, backup, and awareness. (Commercial) - [Iberlayer Email Guardian](https://cybersectools.com/tools/iberlayer-email-guardian): Cloud-based email security service that blocks spam, phishing, malware, and fraud attacks (Commercial) - [NoSpamProxy Protection](https://cybersectools.com/tools/nospamproxy-protection): Email gateway that blocks spam, phishing and malware before inbox delivery, made (Commercial) - [Sophos Email](https://cybersectools.com/tools/sophos-email): Email security platform with phishing/BEC protection and MDR/XDR integration (Commercial) - [Trustifi AI Powered Email Security](https://cybersectools.com/tools/trustifi-ai-powered-email-security): AI-powered email security platform for threat detection and compliance (Commercial) - [Proofpoint Core Email Protection](https://cybersectools.com/tools/proofpoint-threat-protection): Email security platform with AI-based threat detection and DLP capabilities (Commercial) - [TitanHQ SpamTitan](https://cybersectools.com/tools/titanhq-spamtitan): Email security platform blocking spam, phishing, malware, and viruses (Commercial) - [Cisco Secure Email Threat Defense](https://cybersectools.com/tools/cisco-secure-email-threat-defense): Email threat protection for Microsoft 365 with advanced detection capabilities (Commercial) - [GLIMPS Email Security for M365](https://cybersectools.com/tools/glimps-email-security-for-m365): AI-based email security for M365 with phishing, BEC & malware detection. (Commercial) - [Infonaligy Proofpoint Email Security](https://cybersectools.com/tools/infonaligy-proofpoint-email-security): Managed Proofpoint email security service for phishing & BEC protection. (Commercial) - [MailGuard Email Security](https://cybersectools.com/tools/mailguard-email-security): Cloud-based email filtering blocking phishing, malware, spam & BEC attacks. (Commercial) - [Cloudflare Cloud Email Security](https://cybersectools.com/tools/cloudflare-cloud-email-security): Cloudflare Cloud Email Security is a cloud-based email protection service that safeguards organizations against phishing, malware, spam, and other email-borne threats through integrated threat detection and prevention capabilities. (Commercial) - [TrustLayer Mail](https://cybersectools.com/tools/trustlayer-mail): Email security platform with inline threat protection and compliant archiving (Commercial) - [GreatHorn Email Security](https://cybersectools.com/tools/greathorn-email-security): Cloud-native email security platform for phishing detection and response (Commercial) - [Zivver Secure Business Email](https://cybersectools.com/tools/zivver-secure-business-email): All-in-one email security platform for threat protection and compliance (Commercial) - [Trend Micro Trend Vision One™](https://cybersectools.com/tools/trend-micro-trend-vision-onetm): AI-powered email and collaboration security platform for threat detection (Commercial) - [AnubisNetworks Email Security](https://cybersectools.com/tools/anubisnetworks-email-security): Email security platform protecting against fraud, malware, and spam threats (Commercial) - [Abnormal AI Security Mailbox](https://cybersectools.com/tools/abnormal-security-ai-security-mailbox): AI-powered email security operations platform for automated threat triage (Commercial) - [Material Security Email Security](https://cybersectools.com/tools/material-security-email-security): Cloud workspace security platform for email, files, and account protection (Commercial) - [AI-Powered Email Security & DMARC Protection](https://cybersectools.com/tools/emailinspect): AI-powered DMARC monitoring and email authentication security platform (Commercial) ## Alternatives to each of these [Fortra Email Security & Anti-Phishing alternatives](https://cybersectools.com/alternatives/fortra-email-security-and-anti-phishing) · [ConnectWise Email Security alternatives](https://cybersectools.com/alternatives/connectwise-email-security) · [Cellopoint Cloud Email Security Solution alternatives](https://cybersectools.com/alternatives/cellopoint-cloud-email-security-solution) · [ESET Cloud Office Security alternatives](https://cybersectools.com/alternatives/eset-cloud-office-security) · [Bitdefender GravityZone Extended Email Security alternatives](https://cybersectools.com/alternatives/bitdefender-gravityzone-extended-email-security) · [Mesh 365 alternatives](https://cybersectools.com/alternatives/mesh-365) · [INKY Behavioral Email Security Platform alternatives](https://cybersectools.com/alternatives/inky-behavioral-email-security-platform) · [Broadcom Symantec Email Security alternatives](https://cybersectools.com/alternatives/broadcom-symantec-email-security) · [ID Agent Graphus alternatives](https://cybersectools.com/alternatives/id-agent-graphus) · [Upfort alternatives](https://cybersectools.com/alternatives/upfort) · [Microsoft Defender for Office 365 alternatives](https://cybersectools.com/alternatives/microsoft-defender-for-office-365) · [Fortinet FortiMail Email and Workspace Security alternatives](https://cybersectools.com/alternatives/fortinet-fortimail-email-security) ## Other KnowBe4 products [Egress Defend alternatives](https://cybersectools.com/alternatives/egress-defend) · [KnowBe4 AIDA alternatives](https://cybersectools.com/alternatives/knowbe4-aida) · [KnowBe4 Compliance Plus alternatives](https://cybersectools.com/alternatives/knowbe4-compliance-plus) · [KnowBe4 DefendTM Advanced Inbound Email Threat Defense alternatives](https://cybersectools.com/alternatives/knowbe4-defendtm-advanced-inbound-email-threat-defense) · [KnowBe4 Human Risk Management alternatives](https://cybersectools.com/alternatives/knowbe4-human-risk-management) · [KnowBe4 PhishER Plus alternatives](https://cybersectools.com/alternatives/knowbe4-phisher-plus) · [KnowBe4 Platform alternatives](https://cybersectools.com/alternatives/knowbe4-hrm-platform) · [KnowBe4 Prevent alternatives](https://cybersectools.com/alternatives/knowbe4-prevent-intelligent-data-loss-prevention) ## Compare KnowBe4 Cloud Email Security with - [KnowBe4 Cloud Email Security vs Fortra Email Security & Anti-Phishing](https://cybersectools.com/compare/fortra-email-security-and-anti-phishing-vs-knowbe4-cloud-email-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) - [KnowBe4 Cloud Email Security vs Bitdefender GravityZone Extended Email Security](https://cybersectools.com/compare/bitdefender-gravityzone-extended-email-security-vs-knowbe4-cloud-email-security) - [KnowBe4 Cloud Email Security vs Mesh 365](https://cybersectools.com/compare/knowbe4-cloud-email-security-vs-mesh-365) - [KnowBe4 Cloud Email Security vs INKY Behavioral Email Security Platform](https://cybersectools.com/compare/inky-behavioral-email-security-platform-vs-knowbe4-cloud-email-security) - [KnowBe4 Cloud Email Security vs Broadcom Symantec Email Security](https://cybersectools.com/compare/broadcom-symantec-email-security-vs-knowbe4-cloud-email-security) ## KnowBe4 Cloud Email Security Alternatives FAQ ### What are the closest alternatives to KnowBe4 Cloud Email Security? The closest matches to KnowBe4 Cloud Email Security by shared tags and NIST CSF 2.0 coverage are Fortra Email Security & Anti-Phishing, ConnectWise Email Security, Cellopoint Cloud Email Security Solution, ESET Cloud Office Security, and Bitdefender GravityZone Extended Email Security. All of them are Email Security Platforms products. ### How many alternatives to KnowBe4 Cloud Email Security are available? This page shows 43 alternatives to KnowBe4 Cloud Email Security, all in the Email Security Platforms category. Each one is matched on shared tags and NIST CSF 2.0 areas, and the closest matches rank first. ### Is KnowBe4 Cloud Email Security free or commercial? KnowBe4 Cloud Email Security is a commercial Email Security Platforms product. It needs a paid license or subscription. Only commercial alternatives are listed here. Free and open source products are under /free. ### What type of solution is KnowBe4 Cloud Email Security? KnowBe4 Cloud Email Security is a Email Security Platforms product in the Email & Messaging Security category. You can compare it with the 43 other Email Security Platforms products on this page. --- Source: https://cybersectools.com/alternatives/knowbe4-cloud-email-security For AI agents: every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md, and any product or compare page has a Markdown copy too (add .md to its URL). More on KnowBe4 Cloud Email Security and its alternatives: 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=alternatives-md