The Mailshell Anti-Phishing SDK integrates anti-phishing, fraud, and identity theft protection into existing security products. It utilizes a state-of-the-art AI engine and Mailshell LiveFeed, a real-time cloud-based reputation service, to identify and block phishing threats. The SDK employs multiple detection engines, including reputation checks, pattern matching, and rules, to analyze emails and compute a final spam probability score using a proprietary formula called SpamScore. It offers a lightweight integration option with limited caching for resource-constrained devices and provides a data feed of top phishing threats. The solution is used by over 600 million end-users worldwide, demonstrating its proven effectiveness in combating phishing attacks.