# SparkPost in January 2021: incidents, uptime and changes

> SparkPost in January 2021: 3 incidents on its status page (1 major or critical), 99.78% 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/2021/01
Last updated: 2021-02-01T00:00:00Z

- Incidents posted: 3 (major/critical: 1) · Maintenance: 1
- By vendor impact label: major 1, minor 1, none 1
- Uptime (vendor-reported): 99.78% free of major/critical incidents, 99.68% free of any incident; outage time 1 h 34 min, incident time 2 h 22 min
- Price changes: 0 · Pricing/legal/trust page changes: 0 · Deprecations: 0 · CVEs: 0
- Previous month: [December 2020](https://rewindex.com/company/sparkpost/2020/12.md) · Next: [February 2021](https://rewindex.com/company/sparkpost/2021/02.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 |
| --- | --- | --- | --- | --- | --- |
| [Transmissions API injection elevated error rates/timeouts & Outbound message delivery is delayed/slow for some SparkPost and SparkPost Enterprise customers (US hosted only)](https://rewindex.com/company/sparkpost/incidents/8jft1lsn2lff.md) | major | 2021-01-07 20:56 UTC | 2021-01-07 22:30 UTC | 1.6 h | resolved |

## All incidents

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [Transmissions API injection elevated error rates/timeouts & Outbound message delivery is delayed/slow for some SparkPost and SparkPost Enterprise customers (US hosted only)](https://rewindex.com/company/sparkpost/incidents/8jft1lsn2lff.md) | major | 2021-01-07 20:56 UTC | 2021-01-07 22:30 UTC | 1.6 h | resolved |
| [Webhook delays for some SparkPost and SparkPost Enterprise customers (US hosted only)](https://rewindex.com/company/sparkpost/incidents/7pjk9tn8w5s0.md) | minor | 2021-01-08 18:49 UTC | 2021-01-08 19:37 UTC | 48 min | resolved |
| [We experienced an increase in "delays"/4xx errors on outbound message delivery for some SparkPost and SparkPost Enterprise customers (US hosted only)](https://rewindex.com/company/sparkpost/incidents/0njf25qfnk5b.md) | none | 2021-01-14 15:00 UTC | 2021-01-14 15:00 UTC | 0 min | resolved |

## Maintenance

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [\[Scheduled\] Sending Domains Maintenance](https://rewindex.com/company/sparkpost/incidents/wt7rdntlvjg1.md) | maintenance | 2021-01-29 02:39 UTC | 2021-01-29 02:45 UTC | 6 min | resolved |

## Cite this

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

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


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Canonical: https://rewindex.com/company/sparkpost/2021/01 · Markdown: https://rewindex.com/company/sparkpost/2021/01.md · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-05T16:36:00.456Z