- Level
- confirmed
- Worst impact
- Degraded
- Components
- SMTP Delivery - USA
- Regions
- eu, us
What to do
Check whether you use SparkPost SMTP Delivery - USA in eu, us. Check your stack
Paste a package.json, lockfile, Terraform or a list of domains at down.guide/stack to see every provider you depend on.Confirm your retries, queues and scheduled jobs caught up after the 1h 1m it lasted.
Anything that failed between 2025-11-27 14:22 UTC and 2025-11-27 15:24 UTC may need a replay.Subscribe to SparkPost's feed to hear about the next one first. RSS feed
https://down.guide/feed?provider=sparkpost works in Slack (/feed subscribe), Discord feed bots and any RSS reader.
Updates from SparkPost 6
- investigating
We are investigating an increase in delivery latency for some outbound messages. (NOTE: This does not impact our customers hosted in the EU.)
provider
- identified
The issue has been identified and a fix is being implemented.
provider
- monitoring
A fix has been implemented and we are monitoring the results.
provider
- monitoring
The MTA1 cluster is beginning to stabilize and we are seeing active recovery. We will continue to monitor and provide updates as the cluster fully recovers.
provider
- monitoring
We continue to see significant recovery on the delayed messages. Continuing to monitor and will post the next status after full recovery.
provider
- resolved
We have seen fully recovery from this delay event. A postmortem will be posted shortly detailing the root cause and steps we have taken to prevent a reoccurrence.
provider
Reports count in aggregate; nothing about you is shown.
Corrections
None so far.
Something wrong on this page? Report an error or send us a note. Every fix is listed here.
Questions about DWN-e15bf00734
Is SparkPost still down?
No, this incident was resolved 2025-11-27 15:24 UTC. For SparkPost's live state, see https://down.guide/sparkpost.
How long did it last?
1h 1m, from 2025-11-27 14:22 UTC to 2025-11-27 15:24 UTC, by the times SparkPost posted.
What was affected?
SparkPost named SMTP Delivery - USA in eu, us.
What caused it?
SparkPost hasn't published a root cause. If it does, it shows here.
Where does this come from?
SparkPost's official status page, https://status.sparkpost.com, quoted verbatim. down.guide's own probes, reports and social counts are labeled as ours.