Microsoft SNDS
IP-level reputation and complaint rates from Microsoft Outlook’s Smart Network Data Services.
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Microsoft SNDS integration requires a Pro plan or higher. Get IP reputation data, complaint rates, and spam trap insights for Outlook & Hotmail.
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Microsoft SNDS
IP reputation snapshot
Microsoft groups your sending IPs into Green / Yellow / Red tiers based on complaint rate, traffic shape, and history. Yellow IPs are throttled; Red IPs are spam-filtered.
IPs (last day)
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Avg complaint rate
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Trap hits (30d)
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Total volume (30d)
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Sending IPs — latest status
User-reported complaint rate
Microsoft flags senders above 0.10% (recommended) and 0.50% (policy). Stay below the recommended threshold for best inbox placement.
Avg complaint rate
0.50% Policy
0.10% Recommended
Daily breakdown
| Date ▼ | IPs reporting | Avg complaint rate | Worst IP |
|---|---|---|---|
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Spam trap hits
Microsoft tracks honeypot addresses on their networks. Any hit indicates a list-quality problem — purchased data, expired addresses, or scraped emails.
Reputation heatmap
Microsoft’s reputation tier per IP, per day. The single most actionable signal in SNDS — a Throttled or Spam-filtered tier means Outlook is sending your mail to junk regardless of every other metric.
Inbox-ready
Throttled
Spam-filtered
No volume
What to do if you see persistent yellow or red
Persistent Throttled (yellow): warm up the IP slower, audit complaint rate, clean inactive recipients from your lists.
Persistent Spam-filtered (red): Microsoft is rejecting your mail. File an unblock / mitigation request at senders.microsoft.com.
No-volume rows: normal if the IP doesn’t typically send to Outlook / Hotmail. Ignore unless you expected volume there.
Daily sending volume
Total mail accepted by Microsoft across all your IPs. Use this to spot ramp-up, dips, or anomalies in send pattern.
Daily volume (all IPs)
Delivery funnel — last day, by IP
| IP | Sent | Delivered | Rejection rate |
|---|---|---|---|
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Connect Microsoft SNDS
Get IP reputation data, complaint rates, and spam trap hits from Microsoft's Smart Network Data Services for Outlook & Hotmail delivery.
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