Mailshell Anti-Spam SDK Lite is a software library that blocks spam and phishing emails in low-memory devices such as mobile devices, routers, and modems. It requires less than 1MB of code on the device and integrates with Mailshell's AI Engine and LiveFeed reputation technology to identify threats. The SDK includes an API for integration and offers over 120 configuration options to optimize memory usage, throughput, and detection. It is proven and used by over 500 million end-users worldwide.