What are Microsoft’s complaint thresholds?

Microsoft's complaint thresholds align with industry standards at below 0.3% maximum, with best practice targeting under 0.1%. Exceeding these thresholds triggers increased junk folder placement and potential blocking. JMRP reports help monitor complaint rates in real time.

Microsoft's response to complaint spikes can be faster and more severe than some providers. A sudden increase in junk reports may trigger immediate filtering increases, with recovery requiring sustained improvement over time.

The threshold applies to complaints from Microsoft users specifically, not your overall complaint rate. If your Microsoft segment has different engagement patterns than other providers, you may need Microsoft specific strategies to maintain acceptable rates. Monitoring JMRP data helps catch problems before they escalate.