Mailshell DNS SDK provides secure DNS resolution for OEMs by sending DNS packets over HTTP(S) to Mailshell servers for decoding and extraction. It features four filtering levels (None, Low, Medium, High), military-grade encryption, and HTTP(S) support. The SDK supports multiple platforms with minimal code footprint and integrates into various security and networking products, including low-memory devices. Over 500 million end-users worldwide utilize Mailshell's security engines.