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Twilio Outage History

Every past Twilio outage tracked by IsDown, with detection times, duration, and resolution details.

There were 10417 Twilio outages since April 2020. The 1888 outages from the last 12 months are summarized below, with incident details, duration, and resolution information.

Minor May 24, 2026

May 2026: Twilio Accounts may not be able to Connect to Dialogflow VirtualAgent for Voice

Detected May 24, 2026 9:30 PM EDT · Resolved May 25, 2026 2:23 AM EDT · Duration about 5 hours

Twilio experienced elevated latency issues when connecting to Dialogflow CX agents via the VirtualAgent service for voice interactions, lasting approximately 4.9 hours. The incident affected the Dialogflow component, causing delays in voice conversations with virtual agents. Engineers resolved the latency issues and confirmed full service recovery.

Minor May 23, 2026

May 2026: SMS Delivery Delays from a Subset of Twilio Phone Numbers to TCell Tajikistan

Detected May 23, 2026 1:17 AM EDT · Resolved May 23, 2026 5:56 PM EDT · Duration about 17 hours

Twilio experienced SMS delivery delays lasting 16.6 hours from a subset of their phone numbers to TCell network subscribers in Tajikistan. The issue affected Twilio's SMS service in the APAC region, preventing timely message delivery to users on the TCell network. The team identified the root cause and monitored recovery before confirming full resolution of normal SMS delivery operations.

Minor May 22, 2026

May 2026: MMS Delivery Delays from a Subset of Twilio Short Codes to T-Mobile United States

Detected May 22, 2026 1:03 PM EDT · Resolved May 22, 2026 7:01 PM EDT · Duration about 6 hours

Twilio experienced MMS delivery delays from a subset of their short codes to T-Mobile subscribers in the United States for 6 hours. The issue affected Twilio customers' ability to send MMS messages through short codes to T-Mobile network users, causing delivery delays. The incident was resolved and MMS delivery returned to normal operation.

Minor May 21, 2026

May 2026: SMS Delivery Receipt Delays From a Subset of Twilio Long Codes and Toll-Free Numbers to Viaero United States

Detected May 21, 2026 6:59 PM EDT · Resolved May 22, 2026 1:52 PM EDT · Duration about 19 hours

Twilio experienced SMS delivery delays for 18.9 hours when sending messages from a subset of long codes and toll-free numbers to Viaero network subscribers in the United States. While messages could still be delivered successfully, customers experienced significant delays in receiving delivery receipts. The issue was identified and resolved, with SMS delivery to Viaero returning to normal operation.

Minor May 21, 2026

May 2026: SMS Delivery Delays and Failures Between a Subset of Twilio Long Codes and Multiple Networks in France

Detected May 21, 2026 3:44 PM EDT · Resolved May 21, 2026 6:42 PM EDT · Duration about 3 hours

Twilio experienced SMS delivery delays and failures between a subset of long codes and multiple networks in France for 3 hours. The issue affected SMS services in the Europe region, preventing reliable message delivery to French mobile networks. The incident was resolved after monitoring confirmed service stability was restored.

Minor May 21, 2026

May 2026: SMS Delivery Delays from a Subset of Twilio Long Codes and Toll-Free Numbers to Viaero United States

Detected May 21, 2026 1:35 PM EDT · Resolved May 21, 2026 6:18 PM EDT · Duration about 5 hours

Twilio experienced SMS delivery delays from a subset of long codes and toll-free numbers to Viaero network subscribers in the United States for 4.7 hours. The issue affected SMS services across North America including both toll-free and long code messaging. Twilio identified the root cause and restored normal SMS delivery operations after monitoring service stability.

Minor May 21, 2026

May 2026: SMS Delivery Delays from Twilio Phone Numbers to Airtel Kenya

Detected May 21, 2026 12:49 PM EDT · Resolved May 21, 2026 4:14 PM EDT · Duration about 3 hours

Twilio customers experienced SMS delivery delays when sending messages from Twilio phone numbers to Airtel network subscribers in Kenya for 3.4 hours. The issue affected SMS services in the Middle East & Africa region. Twilio's team identified the root cause and restored normal SMS delivery operations to Airtel Kenya subscribers.

Minor May 21, 2026

May 2026: SMS Delivery Delays from a Subset of Twilio Short Codes and Long Codes to Liberty Puerto Rico

Detected May 21, 2026 6:10 AM EDT · Resolved May 21, 2026 11:17 AM EDT · Duration about 5 hours

Twilio experienced SMS delivery delays lasting 5.1 hours affecting messages sent from a subset of short codes and long codes to Liberty Mobile network subscribers in Puerto Rico. The issue impacted SMS services in the Latin America region, causing delayed message delivery for customers trying to reach Liberty Puerto Rico mobile users. Twilio identified the root cause and observed service recovery, with the team monitoring for stability.

Minor May 21, 2026

May 2026: SMS Delivery Delays and Failures from a Subset of Twilio Phone Numbers to China Mobile Hong Kong

Detected May 21, 2026 1:27 AM EDT · Resolved May 21, 2026 7:49 AM EDT · Duration about 6 hours

Twilio experienced SMS delivery delays and failures from a subset of phone numbers to China Mobile network subscribers in Hong Kong for 6.4 hours. The issue affected SMS services in the APAC region, preventing reliable message delivery to this specific carrier network. Twilio identified the root cause and resolved the incident, with SMS delivery returning to normal operations.

Minor May 20, 2026

May 2026: SMS Delivery Delays from Twilio Phone Numbers to Entel Peru

Detected May 20, 2026 2:36 PM EDT · Resolved May 20, 2026 7:42 PM EDT · Duration about 5 hours

Twilio experienced SMS delivery delays from Twilio phone numbers to Entel network subscribers in Peru for 5.1 hours. The incident affected SMS services in the Latin America region, preventing timely message delivery to users on the Entel network. The issue was identified and resolved, with SMS delivery returning to normal operations.