Iterable incident

Email send delays for some US-hosted SparkPost traffic

Iterable experienced a major incident on February 24, 2026 affecting Global Campaign Sends, lasting 1m. The incident has been resolved; the full update timeline is below.

Started: Feb 24, 2026, 07:51 PM UTC
Resolved: Feb 24, 2026, 07:52 PM UTC
Duration: 1m
Detected by Pingoru: Feb 24, 2026, 07:51 PM UTC

Affected components

Global Campaign Sends

Update timeline

monitoring Feb 24, 2026, 07:51 PM UTC

Email sends for US-hosted customers using SparkPost were delayed due to elevated 5xx errors and increased API latency from SparkPost’s Transmissions API. EU-hosted traffic was not impacted. All customers using ESPs other than Sparkpost were similarly not impacted. SparkPost has indicated the incident is resolved. We’re monitoring outbound email queues to ensure sends are fully processing as expected. If you continue to experience issues, please contact Support.
resolved Feb 24, 2026, 07:52 PM UTC

SparkPost’s API issue has been resolved, and we’re no longer seeing elevated 5xx errors or increased latency. Incident has resolved.