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Outage in Twilio

MMS Delivery Delays from Twilio Short Codes to AT&T United States

Resolved Minor
May 18, 2026 - Started about 14 hours ago - Lasted about 5 hours
Official incident page

Incident Report

Summary AI Generated

Twilio experienced MMS delivery delays from Short Codes to AT&T network subscribers in the United States for 5.5 hours. The issue affected MMS Short Code services in North America, causing delayed message delivery to AT&T customers. Twilio identified the root cause and restored normal MMS delivery operations.

Twilio customers may be experiencing MMS delivery delays from Twilio Short Codes to AT&T network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.

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Latest Updates ( sorted recent to last )
RESOLVED about 8 hours ago - at 05/19/2026 03:36AM

The incident has been resolved and MMS delivery from Twilio Short Codes to AT&T network subscribers in the United States is operating normally.

MONITORING about 10 hours ago - at 05/19/2026 01:30AM

We have observed a recovery in MMS delivery from Twilio Short Codes to AT&T network subscribers in the United States and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.

IDENTIFIED about 10 hours ago - at 05/19/2026 01:23AM

Twilio customers may be experiencing MMS delivery delays from Twilio Short Codes to AT&T network subscribers in the United States. 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.

IDENTIFIED about 12 hours ago - at 05/18/2026 11:23PM

Twilio customers may be experiencing MMS delivery delays from Twilio Short Codes to AT&T network subscribers in the United States. 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.

IDENTIFIED about 13 hours ago - at 05/18/2026 10:22PM

Twilio customers may be experiencing MMS delivery delays from Twilio Short Codes to AT&T network subscribers in the United States. 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.

INVESTIGATING about 14 hours ago - at 05/18/2026 10:09PM

Twilio customers may be experiencing MMS delivery delays from Twilio Short Codes to AT&T network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.

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