Email Security
Libraesva Email Security
Secure email gateway with local-sandbox attachment and URL analysis, anti-phishing, outbound DLP.
Libraesva Email Security Overview
What it does
Libraesva Email Security is a Secure Email Gateway (SEG) that inspects inbound and outbound mail before delivery to defend against phishing, business email compromise (BEC), malware, and spam. Its distinguishing approach is local processing: attachments are detonated and links analyzed inside a self-contained sandbox on the gateway rather than being shared with external clouds. An Adaptive Trust engine models each organization's normal sender and communication patterns to flag anomalies and impersonation.
How it works
Deployed by pointing a domain's MX record at the gateway, it routes all inbound mail through layered filters: anti-spam and sender-reputation checks, QuickSand attachment sandboxing that disarms Microsoft Office and PDF files locally, and URLSand link rewriting that re-scans each destination in a sandbox at the moment a user clicks. Semantic and Adaptive Trust models add intent and anomaly analysis without sending content to third parties. Outbound mail passes data loss prevention, policy-based encryption, and account-takeover controls that adjust SMTP sending limits from historical patterns. It runs in front of Microsoft 365 and Google Workspace mailboxes.
Credentials and traction
ISO 27001:2022, ISO 27017, and ISO 27018 certified, and GDPR compliant. Positioned as a Niche Player in the 2025 Gartner Magic Quadrant for Email Security and recognized in the Frost Radar for Email Security (2026). Operating since 2013, it serves manufacturing, food, and education customers across Europe and the United States, including Vibram, SRM Concrete, and public school districts in New Jersey and Washington.
Key Capabilities
mapped to solution categoriesFilters spam and bulk unwanted mail before delivery.
Detonates email attachments in an isolated execution environment before delivery, detecting zero-day malware and weaponized documents that bypass signature-based detection.
Rewrites links in inbound email and re-checks the destination at the moment the user clicks, blocking pages that were weaponized after delivery.
Detects and prevents phishing and business email compromise using reputation, signatures and content analysis.
Enforces TLS for SMTP transport and supports S/MIME or PGP for end-to-end message encryption based on sender policy or recipient certificate availability.
Inspects outbound email for data loss prevention policy violations, malicious content, and phishing links before delivery to external recipients.
Routes all inbound email through the SEG via MX record change, enabling pre-delivery inspection, queuing, and filtering before messages reach the mail server.
Compliance
certificationsIntegrations
compatible toolsImplementation & support
Info last updated on August 5, 2026
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