Announcements: Click here to see new updates for SNDS. Updated April 30th, 2026

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.

Upcoming changes
  • In May 2026, SNDS will move to a new URL as part of a service update. The current site at https://sendersupport.olc.protection.outlook.com will be deprecated. This will introduce a number of changes listed below. During the migration users can expect downtime to the system, including no JMR feeds or report data
  • IP Status and IP Data reports will be accessible through a new REST api. Authentication will be provided through the same login users use to access the SNDS portal
  • Calculation of IP Status and IP Data will be based off updated data
  • Columns in IP Status and IP Data reports will change to reflect the updated data model.
  • Automated report links will expire after 30 days. Existing report links will be migrated, but will have to be refreshed 30 days after migration to remain active. After this, a refresh every 30 days will be required to keep the links active.
  • Networks will require periodic reattestation. Once approved, users have access to the network for 10 months before renewal. Users will receive reminders prior to the expiration of their network access to ensure they have time to reattest and maintain access.
  • Approving networks will require authentication. Approvers will have a new experience to renew/approve network access
  • In Edit Profile, Timezones will be based on UTC, not GMT. This means that all time-related settings and displays will now reference Coordinated Universal Time rather than Greenwich Mean Time.
  • After migration, any JMRP feeds that are not linked to SNDS accounts will be removed. You will be asked to create new ones from your SNDS account and keep the network access up-to-date.
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.