Minor incident

SparkPost: Mail delivery delays

Affected: SMTP Delivery - USA, SMTP Delivery - EUROPE

Current status of SparkPost: Operational — live SparkPost status

Timeline

1. Oct 1, 2026, 17:05 UTC
   investigating
   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.
2. Oct 1, 2026, 17:16 UTC
   monitoring
   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.
3. Oct 1, 2026, 17:36 UTC
   resolved
   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.

Updates as published by SparkPost (original).