Outage in SparkPost
Elevated 5xx Suppression List API error rates and latency for some SparkPost customers (US hosted only)
Resolved MinorIncident Report
Summary AI Generated
SparkPost's Suppression List API experienced elevated 5xx error rates and increased latency for US-hosted customers over 1.2 hours. EU-hosted customers were not affected by this incident. The issue was identified, a fix was implemented and monitored, then fully resolved.
We are experiencing an elevated level of errors and latency on the Suppression List API for some SparkPost customers. Please retry any 5xx error.
Note: This issue does not impact SparkPost customers hosted in the EU.
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Latest Updates ( sorted recent to last )
RESOLVED
2 days ago - at 05/11/2026 08:02PM
This incident has been resolved.
MONITORING
2 days ago - at 05/11/2026 07:46PM
A fix has been implemented and we are monitoring the results.
IDENTIFIED
2 days ago - at 05/11/2026 06:55PM
We are experiencing an elevated level of errors and latency on the Suppression List API for some SparkPost customers. Please retry any 5xx error.
Note: This issue does not impact SparkPost customers hosted in the EU.
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