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

Affected components

• SMS, Latin America

1. resolvedOct 15, 2026, 22:33 UTC

   The incident has been resolved and SMS delivery receipts from a subset of Twilio to Altan Redes network subscribers in Mexico are operating normally.

2. monitoringOct 15, 2026, 20:19 UTC

   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.

3. monitoringOct 15, 2026, 16:18 UTC

   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.

4. monitoringOct 15, 2026, 14:18 UTC

   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.

5. identifiedOct 15, 2026, 08:48 UTC

   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.

6. identifiedOct 15, 2026, 00:45 UTC

   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. identifiedOct 14, 2026, 20:44 UTC

   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.

8. identifiedOct 14, 2026, 18:43 UTC

   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.

9. identifiedOct 14, 2026, 17:43 UTC

   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.

10. investigatingOct 14, 2026, 15:41 UTC

    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.

11. investigatingOct 14, 2026, 14:41 UTC

    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.

What APIStatus.watch saw

Our 5-minute checks didn't record a change in SendGrid's overall status around this incident. Smaller or regional incidents often leave a provider's overall status green.

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