SendGrid incident: Voice Call Failures From a Subset of Twilio Phone Numbers to Argentina

Affected components

• Voice, Latin America

1. resolvedOct 28, 2026, 18:09 UTC

   The incident has been resolved and voice calls from a subset of Twilio Phone Numbers to network subscribers in Argentina are operating normally.

2. monitoringOct 28, 2026, 17:10 UTC

   We have observed a recovery in voice calls from a subset of Twilio Phone Numbers to network subscribers in Argentina and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.

3. identifiedOct 28, 2026, 14:16 UTC

   Twilio customers may be experiencing voice call failures from a subset of Twilio Phone Numbers to network subscribers in Argentina. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.

4. identifiedOct 28, 2026, 10:04 UTC

   Twilio customers may be experiencing voice call failures from a subset of Twilio Phone Numbers to network subscribers in Argentina. 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. identifiedOct 28, 2026, 08:03 UTC

   Twilio customers may be experiencing voice call failures from a subset of Twilio Phone Numbers to network subscribers in Argentina. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.

6. identifiedOct 28, 2026, 06:57 UTC

   Twilio customers may be experiencing voice call failures from a subset of Twilio Phone Numbers to network subscribers in Argentina. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.

7. investigatingOct 28, 2026, 05:29 UTC

   Twilio customers may be experiencing voice call failures from a subset of Twilio Phone Numbers to network subscribers in Argentina. Our team is actively investigating this issue. We will provide another update in 8 hours or as soon as more information becomes available.

8. investigatingOct 28, 2026, 01:29 UTC

   Twilio customers may be experiencing voice call failures from a subset of Twilio Phone Numbers to network subscribers in Argentina. Our team is actively investigating this issue. We will provide another update in 4 hours or as soon as more information becomes available.

9. investigatingOct 27, 2026, 23:28 UTC

   Twilio customers may be experiencing voice call failures from a subset of Twilio Phone Numbers to network subscribers in Argentina. Our team is actively investigating this issue. We will provide another update in 2 hours or as soon as more information becomes available.

10. investigatingOct 27, 2026, 22:28 UTC

    Twilio customers may be experiencing voice call failures from a subset of Twilio Phone Numbers to network subscribers in Argentina. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.

What APIStatus.watch saw

• Oct 28, 2026, 11:20 UTCoperational → unknown
• Oct 28, 2026, 11:25 UTCunknown → operational
• Oct 28, 2026, 13:45 UTCoperational → unknown
• Oct 28, 2026, 13:50 UTCunknown → operational
• Oct 28, 2026, 18:10 UTCoperational → unknown
• Oct 28, 2026, 18:15 UTCunknown → operational

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How often does SendGrid have incidents?

SendGrid reported 506 incidents in the last 90 days, 1 of them major or critical. A typical incident lasted 6h 11m. See SendGrid's uptime and incident history