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

Incident Report for SparkPost

Resolved

This incident has been resolved.

Posted Feb 24, 2026 - 13:17 EST

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

Posted Feb 24, 2026 - 12:34 EST

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

Posted Feb 24, 2026 - 12:19 EST

We are currently investigating this issue. No messages are lost.

Posted Feb 24, 2026 - 10:01 EST

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