Real-time email delivery metrics across major providers
Last updated: Jul 7, 2025 1:45 PM PDT
Current ESP Status
| Provider | P95 Latency (s) | Retry Rate | Trend | Status | Details |
|---|---|---|---|---|---|
| Apple iCloud | 2.38 | 2.7% | ▬ | Healthy | View Details |
| Comcast / Xfinity | 1.05 | 1.3% | ▬ | Healthy | View Details |
| GMX / WEB.de | 1.85 | 0.0% | ▬ | Healthy | View Details |
| Google Mail | 0.57 | 0.4% | ▬ | Healthy | View Details |
| Microsoft 365 | 1.45 | 0.1% | ▬ | Healthy | View Details |
| Outlook / Hotmail | 1.46 | 0.0% | ▬ | Healthy | View Details |
| Yahoo / AOL | 1.46 | 0.0% | ▬ | Healthy | View Details |
Details for Google Mail
← Back to OverviewP95 Latency (24 hours)
Delivery Issues (24 hours)
Retry and Bounce RatesAbout 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?
- Query ANY domain - not just the majors you see above
- 1-minute granularity
- Slack / webhook alerts the moment a delivery issue arises
- Contact us