Sophos Anti-Spam SDK offers a rich API for software vendors, OEMs, ISPs and email service providers. This enables integration of the Sophos anti-spam protection engine into their own software, appliances, or services. Integrate multiple capabilities, including email reputation, spam protection, and phishing protection into your existing solutions. Sophos eXtensible Lists (SXL), an online look-up system, enables broader, more accurate anti-spam intelligence from SophosLabs to secure against emerging spam campaigns.