Microsoft Complaint Feedback Loop Setup

Microsoft provides two essential tools for email senders to monitor and manage reputation: the Junk Email Reporting Program (JMRP) and Smart Network Data Services (SNDS). These tools are critical for maintaining healthy deliverability into Outlook.com, Hotmail, Live, and MSN mailboxes.

This guide outlines what JMRP and SNDS are, why they matter, and how to configure them correctly.

What is SNDS?

Smart Network Data Services (SNDS) offers visibility into how Microsoft views your outbound email traffic. It provides actionable metrics that help you troubleshoot and optimize your sending practices.

SNDS includes:

• IP address reputation scores
• Spam complaint rates
• Traffic volume by IP
• Junk mail filtering indicators

Access to this data enables you to proactively monitor sender reputation and avoid getting filtered or blocked.

What is JMRP?

The Junk Email Reporting Program (JMRP) is Microsoft’s complaint feedback loop system. When a user marks one of your emails as junk, JMRP forwards a copy of that message to a designated reporting address.

JMRP allows you to:

• Identify messages that trigger spam complaints
• Remove complainers from your lists
• Improve audience targeting and content strategy

It’s a key tool for reducing complaint rates and maintaining long-term deliverability.

How to Set Up SNDS

1. Access the SNDS Portal
   Visit: https://sendersupport.olc.protection.outlook.com/snds

2. Sign in with a Microsoft Account
   Use any Microsoft account (e.g., Outlook.com or Hotmail) to access the dashboard.

3. Register Your Sending IPs
   Add your IP addresses or CIDR blocks. Microsoft uses WHOIS or DNS records to verify that you control them.

4. Validate Ownership
   Microsoft will send verification messages to standard administrative contacts such as [email protected] or [email protected]. You must confirm these to gain access.

5. Review Data
   Once confirmed, SNDS will show daily summaries of email volume, complaint metrics, and filtering status for each registered IP.

How to Set Up JMRP

1. Access the JMRP Registration Page
   Visit: https://sendersupport.olc.protection.outlook.com/snds/JMRP.aspx

2. Log in with Your Microsoft Account
   Use the same account as for SNDS to manage both from a single profile.

3. Submit IP Addresses
   Enter the IPs from which you send email.

4. Provide a Complaint Feedback Address
   This should be a monitored inbox such as [email protected] where complaint messages can be reviewed and triaged.

5. Verify Email Ownership
   Microsoft sends a confirmation to the specified address. Once verified, you’ll begin receiving forwarded spam complaint messages.

Best Practices After Enrollment

• Monitor SNDS data regularly to catch early signs of deliverability issues.
• Set up automated workflows to process and react to JMRP complaint emails.
• Ensure your complaint feedback address is actively monitored by your compliance or deliverability team.
• Use SPF, DKIM, and DMARC authentication — Microsoft considers these signals when evaluating sender trustworthiness.
• Investigate any spikes in complaint rates or junk mail classification quickly to avoid deliverability degradation.

Troubleshooting Tips

• Didn’t receive confirmation emails?
  Check that your abuse@ or postmaster@ addresses are live and have valid MX records.

• Not seeing any data?
  Your traffic volume to Microsoft domains may be too low, or your mail stream is currently clean and unflagged.

• Blocked IPs?
  Use the Microsoft Sender Support Form to request a delisting and provide remediation details.