Twilio incident
SMS Delivery Receipt Delays From a Subset of Twilio Short Codes to T-Mobile United States
Resolved after 6 hours 56 minutes, affecting SMS Short Code, North America, on August 31, 2026.
The incident has been resolved and SMS delivery receipts from a subset of Twilio Short Codes to T-Mobile network subscribers in the United States is operating normally.
Affected components
Update timeline
- investigating Aug 31, 2026, 01:43 PM UTC
Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Short Codes 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.
- identified Aug 31, 2026, 02:42 PM UTC
Twilio customers may be experiencing SMS delivery receipt delays from a subset of Twilio Short Codes to T-Mobile network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 1 hour or as soon as more information becomes available.
- identified Aug 31, 2026, 03:44 PM UTC
Twilio customers may be experiencing SMS delivery receipt delays from a subset of Twilio Short Codes to T-Mobile network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 2 hours or as soon as more information becomes available.
- identified Aug 31, 2026, 05:45 PM UTC
Twilio customers may be experiencing SMS delivery receipt delays from a subset of Twilio Short Codes to T-Mobile network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 4 hours or as soon as more information becomes available.
- monitoring Aug 31, 2026, 06:33 PM UTC
We have observed a recovery in SMS delivery receipts from a subset of Twilio Short Codes 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.
- resolved Aug 31, 2026, 08:40 PM UTC
The incident has been resolved and SMS delivery receipts from a subset of Twilio Short Codes to T-Mobile network subscribers in the United States is operating normally.
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