# SparkPost in September 2021: incidents, uptime and changes

> SparkPost in September 2021: 7 incidents on its status page (0 major or critical), 99.91% 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/2021/09
Last updated: 2021-10-01T00:00:00Z

- Incidents posted: 7 (major/critical: 0) · Maintenance: 3
- By vendor impact label: minor 5, none 2
- Uptime (vendor-reported): 99.91% free of major/critical incidents, 97.51% free of any incident; outage time 35 min, incident time 17 h 52 min
- Price changes: 0 · Pricing/legal/trust page changes: 0 · Deprecations: 0 · CVEs: 0
- Previous month: [August 2021](https://rewindex.com/company/sparkpost/2021/08.md) · Next: [October 2021](https://rewindex.com/company/sparkpost/2021/10.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._

## All incidents

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [Elevated 5xx API error rate on Transmissions API (US hosted only)](https://rewindex.com/company/sparkpost/incidents/272x88h9kvb6.md) | none | 2021-09-01 21:38 UTC | 2021-09-01 22:11 UTC | 33 min | resolved |
| [Elevated 5xx API error rates and increased latency for some SparkPost and SparkPost Enterprise customers (US hosted only)](https://rewindex.com/company/sparkpost/incidents/6rj87s0675v5.md) | minor | 2021-09-03 19:44 UTC | 2021-09-03 20:04 UTC | 20 min | resolved |
| [Elevated reporting error rates and data processing delays for some SparkPost and SparkPost Enterprise customers (US hosted only)](https://rewindex.com/company/sparkpost/incidents/ds4k4hxcwmzv.md) | minor | 2021-09-10 10:12 UTC | 2021-09-10 16:01 UTC | 5.8 h | resolved |
| [Elevated reporting error rates and data processing delays for some SparkPost and SparkPost Enterprise customers (US hosted only)](https://rewindex.com/company/sparkpost/incidents/chvccr04dljj.md) | minor | 2021-09-10 18:26 UTC | 2021-09-10 19:45 UTC | 1.3 h | resolved |
| [Outbound message delivery is delayed/slow for some SparkPost and SparkPost Enterprise customers (US hosted only)](https://rewindex.com/company/sparkpost/incidents/wfkp8gbmxj8y.md) | minor | 2021-09-15 21:36 UTC | 2021-09-16 01:09 UTC | 3.5 h | resolved |
| [Outbound message delivery is delayed/slow for some SparkPost and SparkPost Enterprise customers (US hosted only)](https://rewindex.com/company/sparkpost/incidents/9cd249hllx2q.md) | none | 2021-09-16 19:40 UTC | 2021-09-16 21:35 UTC | 1.9 h | resolved |
| [Webhook delays for some SparkPost and SparkPost Enterprise customers (US and EU hosted)](https://rewindex.com/company/sparkpost/incidents/lqyz2v4vv7fr.md) | minor | 2021-09-30 16:26 UTC | 2021-09-30 22:42 UTC | 6.3 h | resolved |

## Maintenance

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [\[Scheduled\] Events API Maintenance Notice](https://rewindex.com/company/sparkpost/incidents/4cn1y6xz3tjz.md) | maintenance | 2021-09-10 19:00 UTC | 2021-09-11 07:00 UTC | 12 h | resolved |
| [\[Scheduled\] Metrics API Maintenance Notice](https://rewindex.com/company/sparkpost/incidents/9xvgg694jk90.md) | maintenance | 2021-09-17 19:06 UTC | 2021-09-19 15:44 UTC | 45 h | resolved |
| [\[Scheduled\] Metrics API Maintenance Notice](https://rewindex.com/company/sparkpost/incidents/y3whwvck11v6.md) | maintenance | 2021-09-27 22:00 UTC | 2021-09-27 23:00 UTC | 1.0 h | resolved |

## Cite this

SparkPost posted 7 status incidents in September 2021 (0 major or critical); 0 price changes and 0 notable page changes observed.

- Canonical URL: https://rewindex.com/company/sparkpost/2021/09
- Citation: SparkPost, “SparkPost in September 2021” (2021-09-01 00:00 UTC). Archived by Rewindex: https://rewindex.com/company/sparkpost/2021/09 (CC BY 4.0).
- Markdown link: `[SparkPost: SparkPost in September 2021 (2021-09-01)](https://rewindex.com/company/sparkpost/2021/09)`


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Canonical: https://rewindex.com/company/sparkpost/2021/09 · Markdown: https://rewindex.com/company/sparkpost/2021/09.md · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T13:11:42.557Z