Best Email DLP Tools

Check Point Software Technologies is a global leader in cyber security solutions, dedicated to protecting corporate enterprises and governments worldwide.

Clearswift Secure Email Gateway is an enterprise email security gateway that inspects inbound and outbound mail for spam, malware, phishing, and data leakage before messages reach users or leave the organization. It is positioned as a deployment-flexible SEG for organizations that need on-premises, virtual appliance, or cloud delivery, and it is used by mid-market and enterprise buyers, including regulated sectors such as financial services, public sector, and defense. Its email scope is centered on threat prevention, content control, and outbound data protection rather than broader security platform functions.

Proofpoint is a human-centric cybersecurity platform focused on protecting organizations from email-based and identity-driven attacks such as phishing, business email compromise (BEC), and social engineering. It secures inbound and outbound communications using advanced threat detection, AI-driven impersonation analysis, URL and attachment sandboxing, and behavioral risk signals. Beyond email protection, it extends into data loss prevention (DLP), insider threat detection, and security awareness training to reduce human risk across the organization. The platform integrates across email, cloud applications, and collaboration tools to protect sensitive data and stop attacks targeting users.

Retarus Secure Email Platform is a cloud-based secure email gateway focused on protecting business email traffic from spam, phishing, malware, BEC, spoofing, and malicious links. It is positioned as a modular email security service for organizations that want gateway-based filtering with data-sovereignty controls and support for complex email infrastructures. Retarus also extends into adjacent areas such as email continuity and transactional email delivery, but its Email Security scope centers on inbound and outbound protection and remediation for enterprise mail environments.

Sophos defeats cyberattacks with an adaptive AI-native open platform and unmatched security expertise.

Spambrella is the best email security and continuity solution to strengthen your business reputation, encrypt sensitive data, and meet regulatory requirements. We provide effective email protection services and real-time cyber threat detection while spreading user awareness among stakeholders.

Trustwave MailMarshal is an email security gateway focused on filtering inbound and outbound mail for phishing, malware, spam, ransomware, business email compromise, and data leakage. It is positioned for organizations that want layered controls, policy enforcement, and deployment flexibility across on-premises, cloud, hybrid, and Microsoft 365 environments. Trustwave and LevelBlue describe it as a long-established product used by enterprises, government organizations, and service providers that need centralized email threat filtering and auditability rather than a lightweight inbox add-on.

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