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.

• A free service that provides high-level insight on how users are rating the email they receive and the health of your IP space as viewed by the Outlook.com system
• Provides easy online registration and access to data
• ISPs can realize cost savings by clamping down on spammers using their network
• ISPs can improve their customer satisfaction by improving their deliverability