Feedback Loops

Email feedback loop documentation, including how to apply for and use them.his site documents email feedback loops, including how to apply for and use them.


Smart Network Data Services (SNDS) and the Junk Mail Reporting Program (JMRP) are two services provides for email senders to receive feedback on their mail. SNDS provides an overview of your IP addresses, and shows relevant statistics like ...


Use Postmaster Tools to analyze your email performance, and help Gmail route your messages to the right place.

Access Data and Diagnostics - Learn from Gmail delivery errors, spam reports, feedback loop, and more.


Deliverability to is based on your reputation. The Smart Network Data Services (SNDS) gives you the data you need to understand and improve your reputation at But just looking at the data isn't enough! Maintaining a ...