SparkPost incident

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

Minor Resolved View vendor source →

SparkPost experienced a minor incident on November 10, 2025 affecting SMTP Delivery - USA, lasting 1h 3m. The incident has been resolved; the full update timeline is below.

Started
Nov 10, 2025, 10:06 PM UTC
Resolved
Nov 10, 2025, 11:10 PM UTC
Duration
1h 3m
Detected by Pingoru
Nov 10, 2025, 10:06 PM UTC

Affected components

SMTP Delivery - USA

Update timeline

  1. investigating Nov 10, 2025, 11:06 PM 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. monitoring Nov 10, 2025, 11:41 PM UTC

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

  3. resolved Nov 11, 2025, 12:10 AM UTC

    This incident has been resolved.