Real-time email delivery metrics across major providers
Last updated: Jul 11, 2025 12:20 AM PDT

Current ESP Status
Provider P95 Latency (s) Retry Rate Trend Status Details
Apple iCloud 2.64 3.5% Healthy View Details
Comcast / Xfinity 1.19 3.4% Healthy View Details
GMX / WEB.de 1.91 0.0% Healthy View Details
Google Mail 0.67 2.9% Healthy View Details
Microsoft 365 1.64 2.0% Healthy View Details
Outlook / Hotmail 1.52 0.0% Healthy View Details
Spectrum / Charter 0.70 75.0% Issues View Details
Yahoo / AOL 1.45 0.0% Healthy View Details

Details for Outlook / Hotmail

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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 each day.
  • Latency measures the time from the start of the connection until we receive the server's response to the DATA command.
  • 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?

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  • 1-minute granularity
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