# SparkPost: We are seeing an increase in "delays"/4xx errors on outbound message delivery for some SparkPost and SparkPost Enterprise customers (US hosted only)

> SparkPost status incident “We are seeing an increase in "delays"/4xx errors on outbound message delivery for some SparkPost and SparkPost Enterprise customers (US hosted only)” on 2021-04-29: impact minor (vendor’s label), 38 min, 1 update(s). Archived by Rewindex.

Canonical: https://rewindex.com/company/sparkpost/incidents/kvpt57m2sfc6
Last updated: 2021-04-29T18:37:00Z

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2021-04-29 17:59 UTC · Resolved: 2021-04-29 18:37 UTC · Duration: 38 min
- Updates: 1
- [Vendor status page: https://status.sparkpost.com/incidents/kvpt57m2sfc6](https://status.sparkpost.com/incidents/kvpt57m2sfc6)
- [Company: SparkPost](https://rewindex.com/company/sparkpost.md)

## Timeline of updates

- **resolved** 2021-04-29 18:37 UTC: This incident has been resolved.

_From the vendor’s published history: only the final update text is available for incidents before Rewindex began polling this page._

## Cite this

Status incident (vendor impact label: minor) posted by SparkPost, started 2021-04-29 17:59 UTC, resolved after 38 min, 1 update(s).

- Canonical URL: https://rewindex.com/company/sparkpost/incidents/kvpt57m2sfc6
- Citation: SparkPost, “We are seeing an increase in "delays"/4xx errors on outbound message delivery for some SparkPost and SparkPost Enterprise customers (US hosted only)” (2021-04-29 17:59 UTC). Archived by Rewindex: https://rewindex.com/company/sparkpost/incidents/kvpt57m2sfc6 (CC BY 4.0).
- Markdown link: `[SparkPost: We are seeing an increase in "delays"/4xx errors on outbound message delivery for some SparkPost and SparkPost Enterprise customers (US hosted only) (2021-04-29)](https://rewindex.com/company/sparkpost/incidents/kvpt57m2sfc6)`


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Canonical: https://rewindex.com/company/sparkpost/incidents/kvpt57m2sfc6 · Markdown: https://rewindex.com/company/sparkpost/incidents/kvpt57m2sfc6.md · JSON: https://rewindex.com/api/v1/companies/sparkpost/incidents/kvpt57m2sfc6 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-05T16:13:59.727Z