Both are largely driven by the traditional reputation influencers, like complaints and spam traps. They’re actively working on expanding their sending domain capabilities as well. Microsoft has been traditionally focused on sending IP in their reputation evaluations and filtering decisions. Microsoft doesn’t provide information on their trusted user group publicly, but that data is available through the Return Path Certification program for an additional fee. Keep in mind that the data shared is a sample and doesn’t reflect exact numbers, but it does best represent how Microsoft views you as a sender. Microsoft’s proprietary sender reporting tool, Smart Network Data Services (SNDS), lets you see metrics around how much mail you are sending and how much mail is accepted, as well as complaints and spam traps. Microsoft focuses on sender reputation, complaints, user engagement, and their own group of trusted users (also known as Sender Reputation Data or SRD) who they poll for feedback. Here are some highlights: What data is important Microsoft is generally the second- or third- largest provider depending on the makeup of your list, and they do handle traffic slightly different from other ISPs.
