DLR Degradation for a Subset of SMPP API Customers.

Incident Report for Twilio

Resolved

A small set of SMPP API Customers were affected by issues with DLR deliveries between 2026-05-07 23:53 UTC and 2026-05-11 13:46 UTC. During this time some DLRs may not have been delivered to the end customer. All systems are fully operational

Posted May 12, 2026 - 02:32 PDT

This incident affected: PROGRAMMABLE MESSAGING (SMPP).