# Courier: Major incident: AWS serviceUnavailable Outage

**Summary:** _summary pending_
- Kind: Major incident · Label: major (vendor)
- Changed: 2024-06-26 01:52 UTC · Detected: 2026-10-19 18:33 UTC
- [Source: https://stspg.io/tp9v7728zrkg](https://stspg.io/tp9v7728zrkg)
- [Company: Courier](https://rewindex.com/company/courier.md)
- Versions: before (none: first archived) → after incident\_version:730/5z7hztb0jnyf@1ebbc253d2fe
- Change 1 of 1 for this incident

Incident page (full timeline): [AWS serviceUnavailable Outage](https://rewindex.com/company/courier/incidents/5z7hztb0jnyf.md)
## What changed

**1. Added: Title**

```diff
+ AWS serviceUnavailable Outage
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2024-06-26 01:52 UTC
```

**5. Added: Resolved time**

```diff
+ 2024-06-26 03:12 UTC
```

**6. Added: Affected components**

```diff
+ API, Courier - API
```

**7. Added: Update** (monitoring) · 2024-06-26 01:49 UTC

```diff
+ An incident where Courier messages resulted in "Internal Courier Error" was the result of AWS returning serviceUnavailable. The team has identified the issue and messages that responded with 5xx errors will be retried by our pipeline resilience.
```

**8. Added: Update** (monitoring) · 2024-06-26 01:52 UTC

```diff
+ An incident where Courier messages resulted in "Internal Courier Error" was the result of AWS returning serviceUnavailable. The team has identified the issue and messages that responded with 5xx errors will be retried by our pipeline resilience.
```

**9. Added: Update** (investigating) · 2024-06-26 02:02 UTC

```diff
+ Service has re-entered a degraded state. Sends from Courier are impacted.
```

**10. Added: Update** (monitoring) · 2024-06-26 02:29 UTC

```diff
+ Service has resumed normal operation. Courier Engineers are monitoring.
```

**11. Added: Update** (resolved) · 2024-06-26 03:12 UTC

```diff
+ The team has resolved the issue. Send pipeline operational.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2024-06-26 01:52 UTC | Major incident: AWS serviceUnavailable Outage (this change) | major |

All Courier changes: [timeline](https://rewindex.com/company/courier/changes.md)
_Diff excerpts are shown on normalized text: dates, counters and tokens appear as ‹date›, ‹count›, ‹tok›; noise-only edits are hidden. Rewindex shows the changed passages, not a copy of the page._


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Canonical: https://rewindex.com/change/i8d2e53f5d0cb6c · Markdown: https://rewindex.com/change/i8d2e53f5d0cb6c.md · JSON: https://rewindex.com/api/v1/changes/i8d2e53f5d0cb6c · Generated 2026-10-20T00:00:58.628Z