SMS Delivery Reports Delayed for SMS Sent via a Small Subset of Twilio Short Codes to U.S. Carriers

Incident Report for Twilio

Resolved

We are no longer experiencing delays in receiving delivery reports for SMS sent from a small subset of Twilio Short Codes to T-Mobile, Metro by T-Mobile, Sprint, and Verizon. This incident has been resolved.

Posted Dec 13, 2020 - 19:18 PST

Monitoring

We are observing successful receipt of delivery reports for messages sent from a small subset of Twilio Short Codes to T-Mobile, Metro by T-Mobile, Sprint, and Verizon for the last 60 minutes. We will continue to monitor to ensure full service recovery. We expect to provide another update in 2 hours or as soon as more information becomes available.

Posted Dec 13, 2020 - 17:29 PST

Update

We continue to experience delays in receiving delivery reports for messages sent from a small subset of Twilio Short Codes to T-Mobile, Metro by T-Mobile, Sprint, and Verizon. The timing of message delivery does not appear to be impacted. Our engineers are still working with our carrier partner to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.

Posted Dec 13, 2020 - 16:08 PST

Update

We are experiencing delays in receiving delivery reports for messages sent from a small subset of Twilio Short Codes to T-Mobile, Metro by T-Mobile, Sprint, and Verizon. The timing of message delivery does not appear to be impacted. Our engineers are working with our carrier partner to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.

Posted Dec 13, 2020 - 15:09 PST

Investigating

Our monitoring systems have detected a potential issue with SMS delivery delays to U.S. carriers. Our engineering team has been alerted and is actively investigating. We will update as soon as we have more information.

Posted Dec 13, 2020 - 14:45 PST

This incident affected: CARRIER NETWORK (SMS Short Code, North America).