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    Clearswift Secure Email Gateway

    Email SecuritySecure Email Gateway (SEG)Email DLPData Loss Prevention

    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.

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    Picari insights

    Organizations requiring a dedicated email security gateway with flexible deployment options and robust data loss prevention capabilities.

    Best for
    • Regulated industries with strict compliance needs.
    • Organizations needing comprehensive inbound and outbound email content control.
    • Hybrid environments requiring on-premise, virtual, or cloud deployment.
    May not be ideal if
    • Organizations seeking a unified security platform with broad capabilities beyond email.
    • Small businesses with minimal email security requirements.
    • Companies preferring an all-in-one cloud-native security solution.

    Core capabilities

    Deep Content Inspection for threat detection
    Analyzes email content down to 50 levels using true file-type detection and structure verification to extract sensitive data from compressed files and embedded objects[2][4].
    Multi-layer anti-virus and anti-malware protection
    Uses multiple antivirus engines including Avira and Sophos with signature, heuristic, and cloud-assisted lookups to block malware, ransomware, and spyware[2][4].
    Advanced spam and phishing filtration
    Delivers 99.9% spam detection via multi-engine filtration incorporating signature engines, machine learning, DMARC, DKIM, SPF, IP reputation, and URL analysis[4][6].
    Data loss prevention with adaptive redaction
    Automatically removes sensitive data from documents and images using OCR technology and redacts metadata, revision history, and hidden information to prevent data leaks[2][4].
    Things to consider

    Every product has trade-offs, and which of them matter depends on your environment, your team and your timeline.

    Ask Picari about Clearswift Secure Email Gateway

    Clearswift Secure Email Gateway pricing and integrations

    For Clearswift Secure Email Gateway integration and pricing details, ask Picari. Start a briefing with your question, such as whether it connects to your SIEM, identity provider and ticketing stack, or how it is priced at your seat count and data volume.

    Ask Picari about Clearswift Secure Email Gateway pricingAsk Picari about Clearswift Secure Email Gateway integrations

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    Profile last updated on 7 September 2026 by Picari.