SendGrid incident: Voice Call Silent and One-Way Audio from Gamma United Kingdom to a Subset of Twilio United Kingdom Phone Numbers

Affected components

• Voice, Europe

1. resolvedOct 16, 2026, 15:58 UTC

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

2. monitoringOct 16, 2026, 13:55 UTC

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

3. investigatingOct 16, 2026, 10:38 UTC

   Twilio customers may be experiencing voice call silent and one-way audio from network subscribers in the United Kingdom to Twilio United Kingdom Phone Numbers. Our team is actively investigating this issue. We will provide another update in 2 hours or as soon as more information becomes available.

4. investigatingOct 16, 2026, 09:53 UTC

   Twilio customers may be experiencing silent calls and one-way audio from network subscribers in the United Kingdom to Twilio United Kingdom phone numbers. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.

5. investigatingOct 16, 2026, 09:37 UTC

   Twilio customers may be experiencing voice call silent and one-way audio from Gamma network subscribers in the United Kingdom to Twilio United Kingdom Phone Numbers. 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

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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• Twilio: Voice Call Post Dial Delay from a Subset of Twilio Phone Numbers to ThailandMinor · Oct 12, 2026, 11:53 UTC
• Grafana Cloud: Phone call notifications to numbers in Russia and Kazakhstan are blockedMinor · Oct 13, 2026, 09:23 UTC
• OpenAI: Delayed Costs data in the Compliance APIMinor · Oct 14, 2026, 17:00 UTC
• Twilio: SMS Delivery Receipt Delays from a Subset of Twilio Short Codes to Brisanet BrazilMinor · Oct 15, 2026, 15:24 UTC

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