# Substack experiencing increased latency

- Provider: [Substack](https://down.guide/providers/substack)
- Confidence: Confirmed
- Impact: Degraded
- lasted 3h 47m
- started 2025-09-15 15:24 UTC
- Substack publications, Writer dashboards, Email delivery +2
- id: DWN-455fa82a6b
- Official page: https://stspg.io/1cqm92rx91q9

## Updates from Substack
### 2025-09-15 15:24 UTC: investigating
We are currently investigating reports of increased latency and slow response times across Substack.

### 2025-09-15 15:34 UTC: investigating
We are continuing to investigate increased latency and error rates across Substack.

### 2025-09-15 15:42 UTC: identified
We have identified an issue and are seeing normal performance across all systems.

### 2025-09-15 15:50 UTC: identified
We are continuing to investigate increased latency and error rates across Substack.

### 2025-09-15 16:38 UTC: identified
We are working to resolve the remaining performance issues across Substack and expect to see recovery shortly.

### 2025-09-15 16:46 UTC: monitoring
We are seeing recovery of performance across Substack and are monitoring the issue.

### 2025-09-15 16:53 UTC: monitoring
As part of the earlier incident, we are noting delays in analytics updating and post email delivery. We are working to resolve the issue.

### 2025-09-15 17:43 UTC: identified
We are seeing recurrence of increased error rates and degraded performance across Substack.

### 2025-09-15 18:39 UTC: monitoring
Substack is operating normally and our team is monitoring.

### 2025-09-15 19:12 UTC: resolved
This incident has been resolved.

From the builder: does your app depend on Substack? [Sazabi](https://www.sazabi.com/?utm_source=down-guide&utm_medium=markdown&utm_content=substack) detects problems in your own logs without hand-written monitors, and you can ask it in plain language which errors mention Substack.

---
down.guide reads providers' official status pages every minute and adds its own evidence, always labeled. Free, no account. Agents: MCP at https://down.guide/mcp, REST at https://down.guide/api/v1, feeds at https://down.guide/feed. Built by [Sazabi](https://www.sazabi.com/?utm_source=down-guide&utm_medium=markdown&utm_content=DWN-455fa82a6b), AI-native observability and security: automatic issue detection, plain-language log search and live dashboards.