What is Microsoft Smart Network Certification?

**Microsoft** previously offered certification programs for sender whitelisting. These programs evolved and changed over time. Current **Microsoft** approach focuses on **SNDS** (Smart Network Data Services) for reputation visibility rather than formal certification.

**SNDS** provides reputation data for IPs sending to **Microsoft** properties. Senders can see their reputation status, complaint rates, and **spam trap** information. This visibility enables self-improvement rather than certified bypass.

**Microsoft**'s approach emphasizes: authentication requirements (they helped drive DMARC adoption), engagement-based filtering, and relationship with high-volume senders through direct channels. Formal certification is less emphasized than demonstrated good practices.