Outage in SparkPost
Email delivery in US region affected
Resolved MajorIncident Report
Summary AI Generated
SparkPost experienced a major incident affecting email delivery in the US region, with users experiencing elevated delays when sending emails through SMTP delivery services. The issue impacted the US region's email delivery infrastructure for approximately 9.7 hours. The system was fully recovered and the incident was resolved after monitoring confirmed stable operations.
We are currently investigating issues with delivery of email impacting US region.
Components affected
SparkPost SMTP Delivery - USATrusted by 1,000+ teams
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Latest Updates ( sorted recent to last )
RESOLVED
2 months ago - at 03/12/2026 11:25AM
This incident has been resolved.
INVESTIGATING
2 months ago - at 03/12/2026 08:00AM
Email delivery in US is impacted, experiencing elevated delays.
MONITORING
2 months ago - at 03/12/2026 07:48AM
System is fully recovered and under monitoring.
INVESTIGATING
2 months ago - at 03/12/2026 06:51AM
We are currently investigating issues with delivery of email impacting US region.
Latest SparkPost outages
Issue with updating payment information - 2 days ago
Elevated 5xx Suppression List API error rates and latency for some SparkPost customers (US hosted only) - 2 days ago
Delayed delivery for some messages in EU - 4 days ago
Increased bounce or delay rate for Apple domains - about 1 month ago
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