# Klaviyo: Major incident: Outbound Webhook Delays

> Klaviyo reported a major Analytics incident starting 2026-10-22 22:20 UTC: some customers and connected third-party apps experienced event webhook delivery delays. New webhook processing was temporarily paused, earlier webhooks continued arriving late, and webhook data was retained; flow webhook act

Canonical: https://rewindex.com/change/i7d5e9fc8a2d5c5
Last updated: 2026-10-22T22:23:52Z

**Summary:** Klaviyo reported a major Analytics incident starting 2026-10-22 22:20 UTC: some customers and connected third-party apps experienced event webhook delivery delays. New webhook processing was temporarily paused, earlier webhooks continued arriving late, and webhook data was retained; flow webhook actions were unaffected. The incident remained open when archived, with 0 minutes elapsed at the last update. _(machine-written, sol)_
- Kind: Major incident · Label: degradation (model (Jev))
- Changed: 2026-10-22 22:20 UTC · Detected: 2026-10-22 22:23 UTC
- [Source: https://status.klaviyo.com/incidents/nj25d3gpt40s](https://status.klaviyo.com/incidents/nj25d3gpt40s)
- [Company: Klaviyo](https://rewindex.com/company/klaviyo.md)
- Versions: before (none: first archived) → after incident\_version:249/nj25d3gpt40s@8a83c319cbd0
- Change 1 of 3 for this incident

Incident page (full timeline): [Outbound Webhook Delays](https://rewindex.com/company/klaviyo/incidents/nj25d3gpt40s.md)
## What changed

**1. Added: Title**

```diff
+ Outbound Webhook Delays
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ identified
```

**4. Added: Start time**

```diff
+ 2026-10-22 22:20 UTC
```

**5. Added: Affected components**

```diff
+ Analytics
```

**6. Added: Update** (identified) · 2026-10-22 22:20 UTC

```diff
+ Some customers and third-party apps connected to Klaviyo accounts are experiencing delays receiving event webhooks. Webhook actions in flows are not affected at this time. To support recovery, we temporarily paused processing of new webhooks at 5:11 PM US/Eastern on October 22, 2026, and earlier webhooks are still being delivered with delays. Webhook data is being retained, and we expect delayed and paused webhooks to be delivered once processing resumes. We are working to resolve this as quickly as possible and will share another update shortly.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-10-22 22:20 UTC | Major incident: Outbound Webhook Delays (this change) | degradation |
| 2026-10-23 04:13 UTC | [Incident updated: Outbound Webhook Delays](https://rewindex.com/change/rf56acceb178822.md) | Normal progress |
| 2026-10-23 13:13 UTC | [Incident updated: Outbound Webhook Delays](https://rewindex.com/change/r08ac84f5a58d63.md) | Normal progress |

Next: [change](https://rewindex.com/change/rf56acceb178822.md) · All Klaviyo changes: [timeline](https://rewindex.com/company/klaviyo/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._

## Cite this

Major incident: Outbound Webhook Delays on Klaviyo’s status page, changed 2026-10-22 22:20 UTC (change 1 of 3).

- Canonical URL: https://rewindex.com/change/i7d5e9fc8a2d5c5
- Citation: Klaviyo, “Major incident: Outbound Webhook Delays” (2026-10-22 22:20 UTC). Archived by Rewindex: https://rewindex.com/change/i7d5e9fc8a2d5c5 (CC BY 4.0).
- Markdown link: `[Klaviyo: Major incident: Outbound Webhook Delays (2026-10-22)](https://rewindex.com/change/i7d5e9fc8a2d5c5)`


---
Canonical: https://rewindex.com/change/i7d5e9fc8a2d5c5 · Markdown: https://rewindex.com/change/i7d5e9fc8a2d5c5.md · JSON: https://rewindex.com/api/v1/changes/i7d5e9fc8a2d5c5 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T15:34:04.246Z