Barracuda

Darktrace / Email is a security platform that utilizes self-learning AI to establish a baseline of "normal" behavior for every user and correspondent within an organization. By analyzing the unique context and intent of communications, the system identifies and blocks anomalous activity such as spear-phishing, account takeovers, and social engineering. The software monitors inbound, outbound, and lateral internal mail to detect sensitive data loss and insider threats without relying on traditional threat intelligence feeds or static rules. It also provides autonomous response capabilities, such as quarantining suspicious messages or providing real-time contextual warnings to end users.

Proofpoint Core Email Protection is a security platform that filters inbound and outbound email to identify and block threats such as phishing, malware, and business email compromise. The system utilizes machine learning and behavioral analysis to inspect message headers, content, and attachments for anomalies and malicious intent. It provides flexible deployment options through either an API-based integration or a secure email gateway to monitor internal and external communications. Additionally, the software includes automated quarantine and remediation features to remove harmful messages from user inboxes after delivery.

Check Point Harmony Email & Collaboration is a security platform designed to protect cloud-based communication tools and office suites from malicious activity. The system uses sandboxing and data sanitization to block phishing attempts, malware attachments, and malicious links before they reach the user's inbox. Beyond email, the software extends these security protocols to collaboration apps like Microsoft Teams, Slack, and various file-sharing services to prevent data leakage and unauthorized access. It operates as an API-based solution, allowing it to inspect internal and external traffic for threats without requiring a gateway reconfiguration.