SparkPost incident

Increased error rates and latency from our APIs

Minor Resolved View vendor source →

SparkPost experienced a minor incident on December 10, 2025 affecting Metrics API - USA and Transmissions API - USA and 1 more component, lasting 2h 29m. The incident has been resolved; the full update timeline is below.

Started
Dec 10, 2025, 03:40 AM UTC
Resolved
Dec 10, 2025, 06:09 AM UTC
Duration
2h 29m
Detected by Pingoru
Dec 10, 2025, 03:40 AM UTC

Affected components

Metrics API - USATransmissions API - USAEvents API - USASparkPost Application - USASMTP API - USASending Domains API - USASuppression List API - USABlocklist API - USAAlerts API - USA

Update timeline

  1. investigating Dec 10, 2025, 03:40 AM UTC

    We are looking into increased error rates and high latency across our APIs. This could be related to a third party outage.

  2. monitoring Dec 10, 2025, 04:46 AM UTC

    One of our third party providers is experiencing increased latency. This is causing a very small amount of the traffic hitting our APIs to error or have high latency. We are monitoring to ensure the latency and error rates don't increase while waiting for their team to resolve the issue.

  3. resolved Dec 10, 2025, 06:09 AM UTC

    This incident has been resolved.