Welcome

Outlook.com Smart Network Data Services


Deliverability to Outlook.com is based on your reputation. The Outlook.com Smart Network Data Services (SNDS) gives you the data you need to understand and improve your reputation at Outlook.com. But just looking at the data isn't enough! Maintaining a good reputation is a lot of work. You should use this data to keep your mailing lists clean and to monitor the IPs you control for unusual behavior. Reputation is always the responsibility of the sender. SNDS gives senders access to detailed data about individual IPs, and it also includes our Junk Email Reporting Program, which lets you receive reports when users junk your messages. Now you can view IP data and manage feedback loop settings from one convenient website.

Announcements

Last updated: July 6, 2026

  • Welcome to the new SNDS portal. This site is replacing the previous site at https://sendersupport.olc.protection.outlook.com/snds/
  • Automated access URLs beginning with https://sendersupport.olc.protection.outlook.com/snds/ are to be deprecated by June 22nd 2026. Please update your URLs. You can verify your new link at Automated Data Access.
  • Some users may receive an error when creating a new automated link: 'There was a problem saving your changes. Please try again.' To resolve this, go to the Edit Profile page, make a change, and save. You should then be able to create the link. We are working on a permanent fix.
  • Trap hit counts will no longer be included in the Data Report starting July 22, 2026. This change is part of our ongoing efforts to protect the integrity and effectiveness of our anti-abuse systems. During the transition period, reported trap hit count values may differ from previous reports and should not be interpreted as exact values.

Getting started


To access SNDS, please log in with a Microsoft Account and then request access to the IPs for which you are responsible. You'll be taken through a simple authorization process, and then you'll soon have access to a wealth of information about those IPs.

Help! I have a problem sending mail to Outlook.com


Building & maintaining good reputation is a long-term proposition. The data on this site can help you do that, but if you have an urgent deliverability issue please have the person most familiar with the issue and your email infrastructure contact sender support.

Other Benefits


SNDS is useful for far more than just monitoring email reputation. It can help IP owners to detect compromised servers, malware, viruses, and botnets. We help network administrators detect these problems so that they can clean them up and make the internet a safer place.