SMS and MMS Delivery Delays from Twilio to T-Mobile United States

Incident Report for Twilio

Resolved

The incident has been resolved and SMS and MMS delivery from Twilio to T-Mobile network subscribers in the United States are operating normally.

Posted Jul 13, 2026 - 14:22 PDT

Monitoring

We have observed a recovery in SMS and MMS delivery from Twilio to T-Mobile network subscribers in the United States and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.

Posted Jul 13, 2026 - 12:19 PDT

Update

Twilio customers may be experiencing SMS and MMS delivery delays from Twilio to T-Mobile network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.

Posted Jul 13, 2026 - 11:51 PDT

Identified

Twilio customers may be experiencing SMS and MMS delivery delays from Twilio to T-Mobile network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 2 hours or as soon as more information becomes available.

Posted Jul 13, 2026 - 09:40 PDT

Investigating

Twilio customers may be experiencing SMS and MMS delivery delays from Twilio to T-Mobile network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.

Posted Jul 13, 2026 - 08:37 PDT

This incident affected: CARRIER NETWORK (SMS Long Code, North America, MMS Long Code, North America, SMS Short Code, North America, MMS Short Code, North America, SMS Toll-Free, North America, MMS Toll-Free, North America) and ZIPWHIP MESSAGING (SMS Long Code, North America, MMS Long Code, North America, SMS Toll-Free, North America, MMS Toll-Free, North America).