Twilio incident
SMS Delivery Receipt Delays from a Subset of Twilio Short Codes to T-Mobile United States
Resolved after 11 hours 43 minutes, affecting SMS Short Code, North America, on September 14, 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
- identified Sep 14, 2026, 09:25 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 Sep 14, 2026, 10:26 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 Sep 15, 2026, 12:27 AM 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.
- identified Sep 15, 2026, 04:27 AM 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 8 hours or as soon as more information becomes available.
- resolved Sep 15, 2026, 09:09 AM 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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