SparkPost outage, 28 October 2026

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

Started
Resolved
28 Oct 2026, 20:37 UTC (after 1 h)
Impact
Minor
Affected
SMTP Delivery - USA

Is this still happening?

No. SparkPost marked this incident resolved on 28 Oct 2026, 20:37 UTC, 1 h after it began.

Right now: SparkPost reports all systems operational. (as of 28 Oct, 20:55 UTC) Live SparkPost status

Last update from SparkPost

This incident has been resolved.

28 Oct 2026, 20:37 UTC

Read the full incident on the official SparkPost status page

Similar SparkPost incidents

Earlier incidents with the same affected part or wording - useful to see how long this kind of problem usually takes.

  1. , resolved after 54 min

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

  2. , resolved after 3 h 15 min

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

  3. , resolved after 27 min

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

  4. , resolved after 2 h 15 min

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

  5. , resolved after 1 h 5 min

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

Other recent SparkPost incidents

  1. Increased message delays in US and EU due to DNS resolution errors

  2. Mail delivery delays

  3. Health Score and Cohort data is delayed

  4. Elevated hard bounces for Apple private relay recipients (privaterelay.appleid.com)

  5. Partial Outage and Delivery Issues in US-West-2 Region

  6. There is a delay effecting some mail sending in EU.

  7. Issue with updating payment information

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

All recorded SparkPost incidents