Minor incident

Twilio: MMS Delivery Receipt Delays from a Subset of Twilio Short Codes to T-Mobile United States

Affected: MMS Short Code, North America

Current status of Twilio: Minor issues — live Twilio status

Timeline

1. Oct 29, 2026, 00:51 UTC
   investigating
   Twilio customers may be experiencing MMS delivery receipt delays from a subset of Twilio Short Codes to T-Mobile network subscribers in the United States. Our team is actively investigating this 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.
2. Oct 29, 2026, 00:54 UTC
   identified
   Twilio customers may be experiencing MMS 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.
3. Oct 29, 2026, 01:56 UTC
   identified
   Twilio customers may be experiencing MMS 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.
4. Oct 29, 2026, 04:01 UTC
   identified
   Twilio customers may be experiencing MMS 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. We will provide another update in 4 hours or as soon as more information becomes available.
5. Oct 29, 2026, 08:02 UTC
   identified
   Twilio customers may be experiencing MMS 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.
6. Oct 29, 2026, 12:02 UTC
   monitoring
   We have observed a recovery in MMS 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.
7. Oct 29, 2026, 14:05 UTC
   resolved
   The incident has been resolved and MMS delivery receipts from a subset of Twilio Short Codes to T-Mobile network subscribers in the United States are operating normally.

Updates as published by Twilio (original).