- Level
- confirmed
- Worst impact
- Major outage
- Components
- Transmissions API - USA, SMTP API - USA, SMTP Delivery - USA
- Regions
- us, us-west-2
- Down Index
- 52of 100
What to do
Check whether you use SparkPost Transmissions API - USA, SMTP API - USA, SMTP Delivery - USA in us, us-west-2. 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 7h 30m it lasted.
Anything that failed between 2026-07-24 11:14 UTC and 2026-07-24 18:44 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 delivery issues caused by an ongoing AWS US West 2 region outage. Customers may experience delays while we assess the impact to our service. We are actively monitoring the situation and will provide updates as more information becomes available.
provider
- identified
Outbound email delivery is blocked for our US West region. We working with our vendor resolve the issue. We are continuing to accept emails and queue them internally. We will deliver the messages as soon as the issue is resolved.
provider
- monitoring
We are starting to deliver mails in our US West region. We are working through the queued messages. We are continuing to monitor the issue and continuing to accept emails.
provider
- monitoring
We are still working through the queued messages. We are continuing to monitor the issue and continuing to accept emails.
provider
- monitoring
We have implemented additional tuning to handle the significant influx of mail due to the AWS network outage and we are seeing improvement in delivery rates We are seeing significant recovery and expect most mail to be fully delivered in the next 30-35 minutes. Estimated time for full recovery is 80-90 minutes. We are continuing to look for additional optimizations and monitor the issue.
provider
- resolved
This incident has been resolved.
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-27c258560b
Is SparkPost still down?
No, this incident was resolved 2026-07-24 18:44 UTC. For SparkPost's live state, see https://down.guide/sparkpost.
How long did it last?
7h 30m, from 2026-07-24 11:14 UTC to 2026-07-24 18:44 UTC, by the times SparkPost posted.
What was affected?
SparkPost named Transmissions API - USA, SMTP API - USA, SMTP Delivery - USA in us, us-west-2.
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.