Outage in SparkPost
Mail delivery delays
Resolved MinorIncident Report
Summary AI Generated
SparkPost experienced intermittent email delivery delays affecting SMTP delivery in the USA and Europe for approximately 34 minutes. Queued messages were held temporarily but delivered once delays cleared, with peak sending periods identified as a contributing factor. The team deployed fixes, confirmed normal delivery through peak periods, and resolved the incident.
Some email deliveries are being delayed. The delays come and go, and queued messages are being delivered once each one clears. Our team is investigating the cause and working on a fix. We'll post an update here as soon as we know more. We apologize for the disruption.
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Latest Updates ( sorted recent to last )
RESOLVED
1 day ago - at 10/01/2026 05:36PM
This issue has been resolved. Since our changes went in, we've seen no further delivery delays, including through peak sending periods. Email is being delivered normally. We apologize for the disruption and thank you for your patience.
MONITORING
1 day ago - at 10/01/2026 05:16PM
We've made changes to address the intermittent delivery delays. Since then, email has been delivered without delay, including during peak sending periods that previously caused the slowdowns. We're watching closely to confirm the issue is fully resolved and will post an update here. Thank you for your patience.
INVESTIGATING
1 day ago - at 10/01/2026 05:05PM
Some email deliveries are being delayed. The delays come and go, and queued messages are being delivered once each one clears. Our team is investigating the cause and working on a fix. We'll post an update here as soon as we know more. We apologize for the disruption.
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Outbound message delivery is delayed/slow for some SparkPost customers (EU hosted only) - about 1 month ago
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