# Klaviyo in May 2021: incidents, uptime and changes

> Klaviyo in May 2021: 4 incidents on its status page (1 major or critical), 97.34% free of major or critical incidents (vendor-reported). From Rewindex’s archive of Klaviyo’s status, pricing and policy pages.

Canonical: https://rewindex.com/company/klaviyo/2021/05
Last updated: 2021-06-01T00:00:00Z

- Incidents posted: 4 (major/critical: 1) · Maintenance: 0
- By vendor impact label: major 1, minor 3
- Uptime (vendor-reported): 97.34% free of major/critical incidents, 59.00% free of any incident; outage time 19 h 47 min, incident time 12.7 days
- Price changes: 0 · Pricing/legal/trust page changes: 0 · Deprecations: 0 · CVEs: 0
- Previous month: [April 2021](https://rewindex.com/company/klaviyo/2021/04.md) · Next: [June 2021](https://rewindex.com/company/klaviyo/2021/06.md) · [All months](https://rewindex.com/company/klaviyo/reports.md) · [Klaviyo](https://rewindex.com/company/klaviyo.md)

_Uptime: Derived from the incidents the vendor posted on its own status page, not measured by us. A minute counts as an outage minute when a major or critical incident (as the vendor labelled it) was open; incident minutes include minor ones too. Maintenance and incidents marked "no impact" are left out, overlapping incidents are merged, a resolved incident counts for at most 7 days, and one still open with no resolution counts for at most 24 hours._

## Major and critical incidents

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [Delay in Real-Time Segmentation Processing](https://rewindex.com/company/klaviyo/incidents/0t9x44l09ff9.md) | major | 2021-05-03 22:11 UTC | 2021-05-04 17:58 UTC | 20 h | resolved |

## All incidents

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [Delay in Real-Time Segmentation Processing](https://rewindex.com/company/klaviyo/incidents/0t9x44l09ff9.md) | major | 2021-05-03 22:11 UTC | 2021-05-04 17:58 UTC | 20 h | resolved |
| [Delay in Analytics Processing for 12.5% of Metrics](https://rewindex.com/company/klaviyo/incidents/bfsm0x3gmtv5.md) | minor | 2021-05-07 11:16 UTC | 2021-05-10 13:36 UTC | 3 d | resolved |
| [Delay in Analytics Processing for 25% of Metrics](https://rewindex.com/company/klaviyo/incidents/n296gp1tn6z7.md) | minor | 2021-05-13 17:39 UTC | 2021-05-18 14:09 UTC | 5 d | resolved |
| [Delay in Analytics Processing for 12.5% of Metrics](https://rewindex.com/company/klaviyo/incidents/49z788t9928w.md) | minor | 2021-05-24 13:47 UTC | 2021-05-28 12:08 UTC | 4 d | resolved |

## Cite this

Klaviyo posted 4 status incidents in May 2021 (1 major or critical); 0 price changes and 0 notable page changes observed.

- Canonical URL: https://rewindex.com/company/klaviyo/2021/05
- Citation: Klaviyo, “Klaviyo in May 2021” (2021-05-01 00:00 UTC). Archived by Rewindex: https://rewindex.com/company/klaviyo/2021/05 (CC BY 4.0).
- Markdown link: `[Klaviyo: Klaviyo in May 2021 (2021-05-01)](https://rewindex.com/company/klaviyo/2021/05)`


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Canonical: https://rewindex.com/company/klaviyo/2021/05 · Markdown: https://rewindex.com/company/klaviyo/2021/05.md · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T13:28:59.250Z