AWS deleted my sending privileges without warning.

That’s how I learned the hard way about the AWS Access Feedback Loop. It’s not just a feature. It’s a safeguard, a watchdog, and—if you’re not ready for it—a traffic spike straight into a wall.

The AWS Access Feedback Loop lets you track complaints and bounces for emails sent through Amazon Simple Email Service. When someone marks your message as spam or when delivery fails, you get notified in near real time. This data flows from Amazon SNS subscriptions tied to SES. The loop is there to protect the reputation of your sender domain and maintain AWS’s trust in your emails. If your complaint rate climbs above thresholds, delivery is throttled—or stopped.

To use the AWS Access Feedback Loop, you first enable feedback forwarding in SES or set up SNS topics for bounces and complaints. SNS pushes JSON records containing details: complaint type, timestamp, feedback ID, and the recipient email. Engineers wire this into logging pipelines, alerting systems, or directly into suppression list management. This is where automation matters—delay in removing bad addresses can cost you your sending access.

Best practice is to monitor metrics daily. Track complaint rate trends. Segment traffic if complaints rise from a specific campaign. Keep suppression lists in sync across all systems. Validate data at ingestion so malformed records don’t break workflows.

The loop is not just reactive—it’s predictive. Over time, the data shows patterns that let you act before AWS does. Frequent hard bounces from certain providers? Purge them before the system flags your account. A sudden surge of complaints from a new segment? Audit content and targeting before sending the next batch.

When set up well, the AWS Access Feedback Loop becomes the heartbeat of your email strategy on AWS. It’s the line between scaling to millions of sends and staring at a frozen account dashboard.

If you want to see a full AWS Access Feedback Loop pipeline running in minutes—wired for real-time bounce and complaint tracking—go to hoop.dev and watch it live.