Microsoft SNDS
Smart Network Data Services — Microsoft’s IP reputation and spamtrap activity views for Outlook/Hotmail.
- Reading time:
- 5 min
- Difficulty:
- Intermediate
- Estimated duration:
- 5 min
- Prerequisites:
- None
- Last updated:
- 2026-07-15
- Author:
- empire
Overview
Smart Network Data Services — Microsoft’s IP reputation and spamtrap activity views for Outlook/Hotmail.
Vendor: Microsoft
Primary purpose
Monitor IP reputation and filtering signals at Microsoft mailbox platforms.
Best for
- Operators sending meaningful volume to Outlook/Hotmail/Live
Common use cases
- Watch IP color/reputation after a ramp
- Detect spamtrap activity on a sending IP
Advantages
- Direct Microsoft IP signal
- Free
Limitations
- IP-centric — domain views are limited
- Setup friction for shared infrastructure
When not to use it
- You only have shared IPs you cannot claim in SNDS
Pricing
Free with IP ownership verification.
Official website
Inputs and outputs
Typical inputs
- Sending IP(s) you control
Typical outputs
- IP reputation
- Trap/activity indicators
Privacy notes
- Review each vendor’s data handling before uploading production lists or message content.
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Related Workflows
- Monitor reputationInstrument FBLs, bounce classes, and provider reputation dashboards with alert thresholds.
- Recover from Outlook junkRemediate Microsoft junking and throttling using SNDS, authentication, and list quality.
- Recover IP reputationIsolate a damaged IP, remediate traffic quality, and warm the IP back into service.