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

Incident Report for SparkPost

Resolved

This incident has been resolved.

Posted Oct 28, 2025 - 16:45 EDT

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

Posted Oct 28, 2025 - 16:11 EDT

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

Posted Oct 28, 2025 - 14:51 EDT

This incident affected: SMTP Delivery (Outbound Message Delivery) (SMTP Delivery - USA).