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

Affected components: CARRIER NETWORK - SMS, Latin AmericaSMS, Latin America

Timeline of updates

1. investigating2026-10-14 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.

2. investigating2026-10-14 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.

3. identified2026-10-14 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.

4. identified2026-10-14 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.

5. identified2026-10-14 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.

6. identified2026-10-15 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. identified2026-10-15 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.

8. monitoring2026-10-15 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.

9. monitoring2026-10-15 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.

10. monitoring2026-10-15 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.

11. resolved2026-10-15 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.

Impact, status and times are the vendor’s own, as last archived. View on stspg.io (opens in new tab). SendGrid profile · Recent SendGrid incidents · Markdown · JSON