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

Incident Report for SparkPost

Resolved

This incident has been resolved.

Posted Dec 01, 2023 - 09:17 EST

Update

We are continuing to monitor for any further issues.

Posted Dec 01, 2023 - 09:02 EST

Monitoring

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

Posted Dec 01, 2023 - 08:44 EST

Update

We are currently investigating:

- increased latency in REST API injections in US
- increased latency in SMTP outbound delivery in US

(NOTE: This does not impact our customers hosted in the EU.)

Posted Dec 01, 2023 - 08:09 EST

Investigating

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

Posted Dec 01, 2023 - 07:50 EST

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