Minor incident

Twilio: SMS Delivery Receipt Delays from a Subset of Twilio to Altan Redes Mexico

Affected: SMS, Latin America

Current status of Twilio: Minor issues — live Twilio status

Timeline

1. Oct 14, 2026, 14:41 UTC
   investigating
   Twilio customers may be experiencing SMS delivery receipt delays from a subset of Twilio Phone Numbers to Altan Redes network subscribers in Mexico. 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 14, 2026, 15:41 UTC
   investigating
   Twilio customers may be experiencing SMS delivery receipt delays from a subset of Twilio Pre-Registered Sender IDs to Altan Redes network subscribers in Mexico. Our team is actively investigating this 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.
3. Oct 14, 2026, 17:43 UTC
   identified
   Twilio customers may be experiencing SMS delivery receipt delays from a subset of Twilio Sender IDs to Altan Redes network subscribers in Mexico. 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.
4. Oct 14, 2026, 18:43 UTC
   identified
   Twilio customers may be experiencing SMS delivery receipt delays from a subset of Twilio Sender IDs to Altan Redes network subscribers in Mexico. 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.
5. Oct 14, 2026, 20:44 UTC
   identified
   Twilio customers may be experiencing SMS delivery receipt delays from Twilio to Altan Redes network subscribers in Mexico. 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.
6. Oct 15, 2026, 00:45 UTC
   identified
   Twilio customers may be experiencing SMS delivery receipt delays from a subset of Twilio Sender IDs to Altan Redes network subscribers in Mexico. 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.
7. Oct 15, 2026, 08:48 UTC
   identified
   Twilio customers may be experiencing SMS delivery receipt delays from a subset of Twilio Sender IDs to Altan Redes network subscribers in Mexico. 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 16 hours or as soon as more information becomes available.
8. Oct 15, 2026, 14:18 UTC
   monitoring
   We have observed a recovery in SMS delivery receipts from a subset of Twilio Sender IDs to Altan Redes network subscribers in Mexico and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
9. Oct 15, 2026, 16:18 UTC
   monitoring
   We have observed a recovery in SMS delivery receipts from a subset of Twilio Sender IDs to Altan Redes network subscribers in Mexico and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
10. Oct 15, 2026, 20:19 UTC
    monitoring
    We have observed a recovery in SMS delivery receipts from a subset of Twilio pre-registered sender IDs to Altan Redes network subscribers in Mexico and are monitoring service stability. We will provide another update in 8 hours or as soon as more information becomes available.
11. Oct 15, 2026, 22:33 UTC
    resolved
    The incident has been resolved and SMS delivery receipts from a subset of Twilio to Altan Redes network subscribers in Mexico are operating normally.

Updates as published by Twilio (original).