Skip to main content
SparkPost

Elevated 5xx Suppression List API error rates and latency for some SparkPost customers (US hosted only)

Degraded Lasted 1h 7m · started · SparkPost's page

Level
confirmed
Worst impact
Degraded
Components
Suppression List API - USA
Regions
eu, us

What to do

  • Check whether you use SparkPost Suppression List API - 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 7m it lasted.

    Anything that failed between 2026-05-11 18:55 UTC and 2026-05-11 20:02 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 3

  1. identified

    We are experiencing an elevated level of errors and latency on the Suppression List API for some SparkPost customers. Please retry any 5xx error. Note: This issue does not impact SparkPost customers hosted in the EU.

    provider

  2. monitoring

    A fix has been implemented and we are monitoring the results.

    provider

  3. 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-f37686ce6d

Is SparkPost still down?

No, this incident was resolved 2026-05-11 20:02 UTC. For SparkPost's live state, see https://down.guide/sparkpost.

How long did it last?

1h 7m, from 2026-05-11 18:55 UTC to 2026-05-11 20:02 UTC, by the times SparkPost posted.

What was affected?

SparkPost named Suppression List API - 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.