Companies/SparkPost/Incidents

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

Affected components: SMTP Delivery (Outbound Message Delivery) - SMTP Delivery - USASMTP Delivery - USA

Timeline of updates

1. investigating2026-02-18 14:51 UTC

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

2. identified2026-02-18 15:02 UTC

   The issue has been identified and a fix is being implemented.

3. identified2026-02-18 15:15 UTC

   We have begun to see improvements to outbound mail delivery delays. We anticipate full recovery in the next 30 minutes.

4. monitoring2026-02-18 15:59 UTC

   We continue to see strong recovery of the mail queues and message delivery. We expect all remaining delayed messages to be delivered in the next 5 minutes.

5. monitoring2026-02-18 16:15 UTC

   We have seen recovery. We will continue monitoring for the next 60 minutes to ensure message queues stay stable.

6. resolved2026-02-18 17:06 UTC

   This incident has been resolved.

Impact, status and times are the vendor’s own, as last archived. View on stspg.io (opens in new tab).

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