Real-time email delivery metrics across major providers
Current ESP Status
| Provider | P95 Latency (s) | Retry Rate | Trend | Status | Details |
|---|
Details for Outlook / Hotmail
← Back to OverviewP95 Latency (24 hours)
Delivery Issues (24 hours)
Retry and Bounce RatesTop Delivery Failure Reasons (24 hours)
| Reason | Distribution |
|---|---|
| Invalid address (user doesn't exist) |
55.9%
|
| Temporary resource unavailable |
37.0%
|
| Unknown |
5.7%
|
| Network error (timeout/refused/reset) |
0.9%
|
| DMARC/authentication rejection |
0.5%
|
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?
- Query ANY domain - not just the majors you see above
- 1-minute granularity
- Slack / webhook alerts the moment a delivery issue arises
- Contact us for more details