# SparkPost: Email delivery in US region affected

- Impact (vendor’s label): major
- Status: resolved
- Started: 2026-03-12 06:51 UTC · Resolved: 2026-03-12 11:25 UTC · Duration: 4.6 h
- Updates: 5 · Affected components: SMTP Delivery (Outbound Message Delivery) - SMTP Delivery - USA, SMTP Delivery - USA
- [Vendor status page: https://stspg.io/756rm9zd2vm1](https://stspg.io/756rm9zd2vm1)
- [Company: SparkPost](https://rewindex.com/company/sparkpost.md)

## Timeline of updates

- **investigating** 2026-03-12 06:51 UTC: We are currently investigating issues with delivery of email impacting US region.
- **monitoring** 2026-03-12 07:48 UTC: System is fully recovered and under monitoring.
- **investigating** 2026-03-12 08:00 UTC: Email delivery in US is impacted, experiencing elevated delays.
- **monitoring** 2026-03-12 10:03 UTC: System functionality has been fully restored and all emails are being transmitted correctly without added latencies; we are actively monitoring.
- **resolved** 2026-03-12 11:25 UTC: This incident has been resolved.

## Rewindex changes for this incident

- 2026-03-12 06:51 UTC: [Major incident: Email delivery in US region affected](https://rewindex.com/change/i03637e1e2839e9.md)


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Canonical: https://rewindex.com/company/sparkpost/incidents/k7n5ptqxgwck · Markdown: https://rewindex.com/company/sparkpost/incidents/k7n5ptqxgwck.md · JSON: https://rewindex.com/api/v1/companies/sparkpost/incidents/k7n5ptqxgwck · Generated 2026-10-19T21:09:56.882Z