Postmaster Tools

• Google Postmaster Tools

  What Google Postmaster Tools provides — enrollment, every dashboard (compliance, spam rate, reputation, feedback loop, authentication, encryption, delivery errors) and how to interpret each.

• Microsoft SNDS & JMRP

  Smart Network Data Services (per-IP reputation data for Outlook.com: filter results, complaint rates, trap hits) and the Junk Email Reporting Program feedback loop — data provided, thresholds, and enrollment.