Elevated 5xx Suppression List API error rates and latency for some SparkPost customers (US hosted only)
Incident Lifecycle
Incident Timeline
Monitoring
A fix has been implemented and we are monitoring the results.
May 11, 2026 at 7:46 PM UTC
Identified
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.
Note: This issue does not impact SparkPost customers hosted in the EU.
May 11, 2026 at 6:55 PM UTC
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