# Svix: Major incident: [US only] Large messages (>300kb) experienced delayed delivery in the US region.

**Summary:** _summary pending_
- Kind: Major incident · Label: major (vendor)
- Changed: 2025-12-06 02:43 UTC · Detected: 2026-10-19 18:53 UTC
- [Source: https://stspg.io/66sjgz3f008x](https://stspg.io/66sjgz3f008x)
- [Company: Svix](https://rewindex.com/company/svix.md)
- Versions: before (none: first archived) → after incident\_version:756/m6n9m10s0s4f@a5bebda8cd75
- Change 1 of 1 for this incident

Incident page (full timeline): [\[US only\] Large messages (\>300kb) experienced delayed delivery in the US region.](https://rewindex.com/company/svix/incidents/m6n9m10s0s4f.md)
## What changed

**1. Added: Title**

```diff
+ [US only] Large messages (>300kb) experienced delayed delivery in the US region.
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2025-12-06 02:43 UTC
```

**5. Added: Resolved time**

```diff
+ 2025-12-04 20:00 UTC
```

**6. Added: Update** (resolved) · 2025-12-04 20:00 UTC

```diff
+ This was automatically resolved, no action needed.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2025-12-06 02:43 UTC | Major incident: \[US only\] Large messages (\>300kb) experienced delayed delivery in the US region. (this change) | major |

All Svix changes: [timeline](https://rewindex.com/company/svix/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._


---
Canonical: https://rewindex.com/change/i277be4f00b5414 · Markdown: https://rewindex.com/change/i277be4f00b5414.md · JSON: https://rewindex.com/api/v1/changes/i277be4f00b5414 · Generated 2026-10-19T21:43:53.948Z