# Klaviyo: Incident updated: Flow Sending Delays

**Summary:** _summary pending_
- Kind: Incident update · Label: not classified yet
- Changed: 2026-10-17 21:03 UTC · Detected: 2026-10-17 21:03 UTC
- [Source: https://stspg.io/lb022bww184p](https://stspg.io/lb022bww184p)
- [Company: Klaviyo](https://rewindex.com/company/klaviyo.md)
- Versions: before incident\_version:249/h0nhg0mtrj77@1c13f05e9933 → after incident\_version:249/h0nhg0mtrj77@af280d818be6
- Change 6 of 8 for this incident

## What changed

**1. Changed: Status**

```diff
- identified
+ monitoring
```

**2. Added: Update** (monitoring) · 2026-10-17 20:59 UTC

```diff
+ Flow processing has resumed and the delayed backlog is actively clearing. This incident affected all flow processing - including flow-triggered email, SMS, WhatsApp and push messages, as well as flow updates to profiles and lists. Some customers may continue to see delays until the backlog fully catches up. Immediate sends were not affected. We continue to monitor closely and appreciate your patience throughout this incident.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-10-17 17:01 UTC | [Major incident: Flow Sending Delays](https://rewindex.com/change/if6243f0673327b.md) | degradation |
| 2026-10-17 18:33 UTC | [Incident updated: Flow Sending Delays](https://rewindex.com/change/r7e504705c663e8.md) | Normal progress |
| 2026-10-17 19:13 UTC | [Incident updated: Flow Sending Delays](https://rewindex.com/change/r20dcdf6ac277c7.md) | Normal progress |
| 2026-10-17 19:43 UTC | [Incident updated: Flow Sending Delays](https://rewindex.com/change/r02256c12541fc9.md) | Normal progress |
| 2026-10-17 20:23 UTC | [Incident updated: Flow Sending Delays](https://rewindex.com/change/r52d9dd933d3981.md) |  |
| 2026-10-17 21:03 UTC | Incident updated: Flow Sending Delays (this change) |  |
| 2026-10-17 21:43 UTC | [Incident updated: Flow Sending Delays](https://rewindex.com/change/r352c2e3b0eaa9f.md) |  |
| 2026-10-17 21:53 UTC | [Incident updated: Flow Sending Delays](https://rewindex.com/change/r2eb155cf528d4d.md) |  |

Previous: [change](https://rewindex.com/change/r52d9dd933d3981.md) · Next: [change](https://rewindex.com/change/r352c2e3b0eaa9f.md) · All Klaviyo changes: [timeline](https://rewindex.com/company/klaviyo/changes.md)
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Canonical: https://rewindex.com/change/rd8174d44b4a9cc · Markdown: https://rewindex.com/change/rd8174d44b4a9cc.md · JSON: https://rewindex.com/api/v1/changes/rd8174d44b4a9cc · Generated 2026-10-18T00:56:11.094Z