Twilio incident
SMS Delivery Receipt Delays from Twilio to Altan Mexico
Twilio experienced a minor incident on July 28, 2026 affecting SMS, Latin America, lasting 1h 47m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Jul 28, 2026, 08:09 PM UTC
Twilio customers may be experiencing SMS delivery receipt delays from Twilio Phone Numbers to Altan 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.
- identified Jul 28, 2026, 08:18 PM UTC
Twilio customers may be experiencing SMS delivery receipt delays from Twilio to Altan 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.
- monitoring Jul 28, 2026, 08:22 PM UTC
We have observed a recovery in SMS delivery receipts from Twilio Phone Numbers to Altan 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.
- monitoring Jul 28, 2026, 08:40 PM UTC
We are continuing to monitor for any further issues.
- resolved Jul 28, 2026, 09:57 PM UTC
The incident has been resolved and SMS delivery receipts from Twilio to Altan network subscribers in Mexico are operating normally.