SecuLetter MARS SLE is an email security solution that specializes in detecting and blocking malware in non-executable (Non-PE) files delivered via email. The product uses reverse engineering techniques at the assembly level to analyze email attachments and embedded links for malicious content before emails reach user mailboxes. The solution performs analysis through memory analysis, SEH chain analysis, and CPU register analysis to identify threats in document files. It can analyze encrypted or password-protected attachments and detects evasion techniques that sandbox-based solutions may miss. MARS SLE is available in two deployment models: on-premises (purchase model) and subscription-based cloud service (SLES). The on-premises version integrates with existing email infrastructure between spam filtering servers and mail servers. The subscription service (SLES) provides the same functionality through a SaaS model without requiring hardware purchase. The product includes threat intelligence capabilities through ConTI (Contents Threat Intelligence), which uses information collection systems and AI to enhance detection rates. It analyzes email metadata including sender/recipient information, URLs, and IP addresses to identify known threats. MARS SLE provides administrator alerts for emails identified as malicious, allows retransmission through configuration settings, and generates detailed reports on malware detection results. The solution is designed for easy installation and operation without requiring dedicated management personnel. The product can be deployed on-premises or through cloud services, connecting directly to email systems for seamless integration into existing infrastructure.