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SparkPost

Outbound message delivery is delayed/slow for some SparkPost customers (US and EU regions)

Degraded Lasted 33m · started · SparkPost's page

Level
confirmed
Worst impact
Degraded
Components
SMTP Delivery - USA, SMTP Delivery - EUROPE
Regions
eu, us

What to do

  • Check whether you use SparkPost SMTP Delivery - USA, SMTP Delivery - EUROPE 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 33m it lasted.

    Anything that failed between 2026-03-05 00:51 UTC and 2026-03-05 01:24 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 3

  1. investigating

    We are investigating an increase in delivery latency for some outbound messages.

    provider

  2. monitoring

    We are observing recovery in email delivery performance and are actively monitoring.

    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-5ed4cda15b

Is SparkPost still down?

No, this incident was resolved 2026-03-05 01:24 UTC. For SparkPost's live state, see https://down.guide/sparkpost.

How long did it last?

33m, from 2026-03-05 00:51 UTC to 2026-03-05 01:24 UTC, by the times SparkPost posted.

What was affected?

SparkPost named SMTP Delivery - USA, SMTP Delivery - EUROPE 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.