Outbound message delivery is delayed/slow for some SparkPost customers (US hosted only)
View the provider incident record →Current answer
SparkPost experienced a minor incident: Outbound message delivery is delayed/slow for some SparkPost customers (US hosted only). ServiceAlert observed recovery on Sep 17, 2026.
Looking for an update now? Check the current status, or follow SparkPost for future changes.
Incident Lifecycle
Affected Components
SMTP Delivery - USA
Incident Timeline
Monitoring
A fix has been implemented and we are monitoring the results.
Sep 17, 2026 at 9:47 AM UTC
Investigating
We are investigating an increase in delivery latency for some outbound messages. (NOTE: This does not impact our customers hosted in the EU.)
Sep 17, 2026 at 9:06 AM UTC
Was your business affected by this SparkPost outage?
Follow SparkPost and route available status alerts to email or a team channel.