SNDS

SNDS (Smart Network Data Services) is an IP reputation system from Microsoft. Different than Senderbase or Senderscore, SNDS results are not open to anyone. Only the owner of the IPs in question is allowed to access SNDS results for those IPs. Accessing SNDS requires a Microsoft account. Once logged in to that account, SNDS can be called from https://postmaster.live.com/snds/. In order to see IPs, access must be requested. This can be done from this page.

SNDS in InboxSys

Before SNDS results are visible in InboxSys app. The SNDS API key must be requested on and copied from this page to your InboxSys account settings, which can be found by clicking the icon in the far right top. The SNDS key can be added in the "Domain and IP settings".