Email and collaboration security

Email security

Gateways and API-based services that filter phishing, malware, spam and business email compromise.

23 vendors · alphabetical

• Abnormal AIAbnormal AI sells a behavioral security platform that protects email, identity, and AI.Privately held · primary category
• Adaptive SecurityAdaptive Security sells a platform that consolidates security awareness training, phishing simulations, email security, AI governance and human risk monitoring.Privately held
• Barracuda NetworksBarracuda Networks sells the BarracudaONE cybersecurity platform, which covers email, data, applications and networks and is strengthened by a 24/7 managed XDR service.Owned by KKR since 2022 · primary category
• BroadcomBroadcom provides semiconductors and infrastructure software for global organizations' complex, mission-critical needs.Public (NASDAQ: AVGO)
• Check Point Software TechnologiesCheck Point Software Technologies sells Check Point Workspace Security to secure the workforce, Check Point Cloud Security to secure the cloud, and Check Point Network Security to secure the network.Public (NASDAQ: CHKP)
• CofenseCofense sells a phishing defense platform that identifies and removes phishing campaigns reaching employee inboxes, along with phishing training built from real attack data.Ownership not established · primary category
• CynetCynet sells an AI-powered platform that unifies endpoint, identity, network, email, SaaS, cloud, SIEM and automation.Ownership not established
• DarktraceDarktrace sells security for AI systems and agents, for network, cloud and OT environments, and for email and collaboration tools.Owned by Thoma Bravo since 2024
• DoppelDoppel sells an AI-powered platform that unifies Digital Risk Protection, Human Risk Management and Email Security.Ownership not established
• EgressEgress, a KnowBe4 company, is a cloud email security provider that says it continuously assesses human risk and dynamically adapts policy controls, defending against advanced phishing attacks and outbound data breaches.Owned by KnowBe4 since 2024 · primary category
• GuardzGuardz sells an MSP-ready security platform that brings identity, endpoint, email, data, awareness, and exposure protection together.Privately held
• HornetsecurityHornetsecurity sells a suite of services for Microsoft 365 security, risk, governance, compliance and backup.Owned by Proofpoint, Inc. since 2025 · primary category
• IRONSCALESIRONSCALES sells email security that protects Microsoft 365 and Google Workspace against business email compromise, account takeover, malware and malicious URLs, credential harvesting, generative AI attacks, QR code and image-based phishing, and deepfake impersonation in Microsoft Teams meetings.Privately held · primary category
• Judy SecurityJudy Security sells cybersecurity in which Judy combines advanced AI with real human expertise.Ownership not established
• KnowBe4KnowBe4 sells attack simulation and training, email and collaboration security, and agent security through the KnowBe4 Platform.Owned by Vista Equity Partners since 2023
• Material SecurityMaterial Security is the company behind Material, an automated cloud workspace security platform for lean security teams that need to protect the email, files, and accounts that live in Google Workspace and Microsoft 365.Ownership not established · primary category
• MimecastMimecast describes the problem it addresses as human risk.Owned by Permira since 2022 · primary category
• NINJIONINJIO sells personalized security coaching, cybersecurity awareness training and simulated phishing, all delivered on a human risk management platform.Ownership not established
• ProofpointProofpoint sells security that covers data and AI as one system, with access that follows intent.Owned by Thoma Bravo since 2021 · primary category
• Sublime SecuritySublime Security sells email security software that offers AI-powered protection against modern email threats.Privately held · primary category
• Trend MicroTrend Micro is a cybersecurity company whose TrendAI business sells enterprise security, including TrendAI Vision One.Public (TSE: 4704)
• TrustifiTrustifi sells a platform that uses AI, behavioral analysis and threat intelligence to detect phishing, business email compromise and malicious content across email, Teams, OneDrive and SharePoint.Privately held · primary category
• VirtruVirtru sells data security software that protects sensitive data shared through email, files, SaaS apps and mission partner environments.Privately held