SparkPost incident

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

Minor Resolved View vendor source →

SparkPost experienced a minor incident on October 28, 2025 affecting SMTP Delivery - USA, lasting 1h 53m. The incident has been resolved; the full update timeline is below.

Started
Oct 28, 2025, 06:51 PM UTC
Resolved
Oct 28, 2025, 08:45 PM UTC
Duration
1h 53m
Detected by Pingoru
Oct 28, 2025, 06:51 PM UTC

Affected components

SMTP Delivery - USA

Update timeline

  1. investigating Oct 28, 2025, 06:51 PM UTC

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

  2. monitoring Oct 28, 2025, 08:11 PM UTC

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

  3. resolved Oct 28, 2025, 08:45 PM UTC

    This incident has been resolved.