Microsoft's Smart Network Data Services (SNDS) uses a traffic light system:

• Green = Good reputation

• Yellow = Potential issues

• Red = Serious problems

If you're seeing Yellow status:

1. Check for recent changes:

• Sudden increases in sending volume

• Higher than normal complaint rates

• Low engagement (opens/clicks)

2. Take these actions:

• Maintain consistent sending volumes

• Remove unengaged subscribers

• Monitor complaint rates

• Ensure content is relevant and expected

• Verify authentication is properly configured

Yellow status often improves within a few days if you follow these practices.

Note: Want up-to-date deliverability tips? Check Email's Email Deliverability Guide in our documentation.