Real-time email delivery metrics across major providers

Current ESP Status
Provider P95 Latency (s) Retry Rate Trend Status Details

Details for Comcast / Xfinity

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P95 Latency (24 hours)
Delivery Issues (24 hours)
Retry and Bounce Rates

About this data

  • The numbers on this page come from SMTP telemetry that Groups.io collects while delivering roughly 15 million real-world emails each day.
  • Metrics are updated every five minutes and down-sampled into 5-minute buckets; raw data older than seven days is automatically purged, and roll-ups are kept for 90 days.

Need deeper, real-time insight?

  • Query ANY domain - not just the majors you see above
  • 1-minute granularity
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