Twilio Outage History

Twilio customers experienced delays in getting WhatsApp templates approved through Twilio/Flows for 52.6 hours, affecting the Messaging Channels service. Engineers deployed a fix and confirmed the issue was fully resolved after monitoring the service for stability.

Twilio experienced an issue where a small percentage of text-to-speech messages using the Google Standard model were being dropped or failing intermittently. The incident affected Twilio's Text-to-Speech service for 1.3 hours. Engineers identified the problem with the Google Standard model specifically and restored normal operations after monitoring confirmed system stability.

Twilio's Intelligent Alerts service was unavailable for some customers for approximately 35 minutes (6:05 AM PT - 6:40 AM PT on May 18, 2026). The service was restored to normal operation and all alerts that were missed during the outage window were replayed to affected customers.

Twilio experienced an issue where a small percentage of real-time transcripts generated via the transcription TwiML verb failed to be stored in Conversational Intelligence, which also prevented subsequent intelligence analysis from being completed. The Intelligence component was affected for 1.6 hours. Engineers implemented a fix and confirmed the issue was resolved, with Conversational Intelligence returning to normal operation.

Twilio experienced SMS delivery delays to Zain network subscribers in Jordan for 3.5 hours. The issue affected SMS services in the Middle East & Africa region, causing delayed message delivery to users on the Zain Jordan network. The incident was resolved and SMS delivery returned to normal operation.

Twilio experienced voice call failures affecting network subscribers attempting to call a subset of Twilio El Salvador phone numbers, impacting the Voice service in Latin America for 4.2 hours. The incident affected Twilio customers who rely on these phone numbers for inbound calls from the network. The issue was identified, monitored during recovery, and fully resolved with normal voice call operations restored.

Twilio experienced SMS delivery delays affecting multiple mobile networks in Colombia, impacting customers sending messages to subscribers in that region. The incident affected Twilio's SMS service specifically in Latin America and lasted approximately 5 minutes. The team investigated the issue and worked to restore normal SMS delivery performance.

Twilio experienced SMS delivery delays from a subset of long codes and short codes to multiple network subscribers in Colombia for 7.8 hours. The incident affected SMS services in the Latin America region, causing delayed message delivery for Twilio customers sending to Colombian networks. The team identified the root cause and restored normal SMS delivery operations.

Twilio's User Authentication Identity Gateway API experienced high latency across multiple countries for 3.1 hours, affecting Lookup Identity Match, Lookup Line Type Intelligence APIs, Lookup SIM Swap, and Legacy Identity MatchAttributes services. The team identified the root cause and implemented a fix, with service recovery observed before full resolution was confirmed.

Twilio experienced an issue where some Australian Sender ID registration submissions were incorrectly transitioning directly to REJECTED status, affecting the Sender ID service component. The incident lasted approximately 18 days, with engineers implementing a fix on May 29th and monitoring system stability for several days before confirming full resolution on June 3rd.