# SparkPost in October 2021: incidents, uptime and changes

> SparkPost in October 2021: 3 incidents on its status page (1 major or critical), 98.78% free of major or critical incidents (vendor-reported). From Rewindex’s archive of SparkPost’s status, pricing and policy pages.

Canonical: https://rewindex.com/company/sparkpost/2021/10
Last updated: 2021-11-01T00:00:00Z

- Incidents posted: 3 (major/critical: 1) · Maintenance: 0
- By vendor impact label: critical 1, minor 2
- Uptime (vendor-reported): 98.78% free of major/critical incidents, 95.90% free of any incident; outage time 9 h 3 min, incident time 30 h 26 min
- Price changes: 0 · Pricing/legal/trust page changes: 0 · Deprecations: 0 · CVEs: 0
- Previous month: [September 2021](https://rewindex.com/company/sparkpost/2021/09.md) · Next: [November 2021](https://rewindex.com/company/sparkpost/2021/11.md) · [All months](https://rewindex.com/company/sparkpost/reports.md) · [SparkPost](https://rewindex.com/company/sparkpost.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 |
| --- | --- | --- | --- | --- | --- |
| [Outbound message delivery is delayed/slow for SparkPost and SparkPost Enterprise customers (US hosted only)](https://rewindex.com/company/sparkpost/incidents/bwl8dr6gwmts.md) | critical | 2021-10-28 16:56 UTC | 2021-10-29 01:59 UTC | 9.1 h | resolved |

## All incidents

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [Elevated error rates for some SparkPost and SparkPost Enterprise customers injecting via SMTP in the US region.](https://rewindex.com/company/sparkpost/incidents/rp20ylqml441.md) | minor | 2021-10-14 13:58 UTC | 2021-10-14 15:49 UTC | 1.9 h | resolved |
| [Outbound message delivery is delayed/slow to certain domains for some SparkPost and SparkPost Enterprise customers](https://rewindex.com/company/sparkpost/incidents/m2qfgrmwvtp0.md) | minor | 2021-10-27 21:27 UTC | 2021-10-29 02:02 UTC | 29 h | resolved |
| [Outbound message delivery is delayed/slow for SparkPost and SparkPost Enterprise customers (US hosted only)](https://rewindex.com/company/sparkpost/incidents/bwl8dr6gwmts.md) | critical | 2021-10-28 16:56 UTC | 2021-10-29 01:59 UTC | 9.1 h | resolved |

## Cite this

SparkPost posted 3 status incidents in October 2021 (1 major or critical); 0 price changes and 0 notable page changes observed.

- Canonical URL: https://rewindex.com/company/sparkpost/2021/10
- Citation: SparkPost, “SparkPost in October 2021” (2021-10-01 00:00 UTC). Archived by Rewindex: https://rewindex.com/company/sparkpost/2021/10 (CC BY 4.0).
- Markdown link: `[SparkPost: SparkPost in October 2021 (2021-10-01)](https://rewindex.com/company/sparkpost/2021/10)`


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Canonical: https://rewindex.com/company/sparkpost/2021/10 · Markdown: https://rewindex.com/company/sparkpost/2021/10.md · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-05T14:43:44.123Z