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SparkPost

Outbound message delivery is delayed/slow for some SparkPost customers (US hosted only)

Degraded Lasted 3m · started · SparkPost's page

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 3m it lasted.

    Anything that failed between 2025-11-04 21:33 UTC and 2025-11-04 21:36 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 2

  1. identified

    We are investigating an increase in delivery latency for some outbound messages. (NOTE: This does not impact our customers hosted in the EU.)

    provider

  2. 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-4485c030fc

Is SparkPost still down?

No, this incident was resolved 2025-11-04 21:36 UTC. For SparkPost's live state, see https://down.guide/sparkpost.

How long did it last?

3m, from 2025-11-04 21:33 UTC to 2025-11-04 21:36 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.