Prelude experienced a minor incident on September 30, 2026 affecting Verify and Notify, lasting 2d 2h. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Sep 30, 2026, 09:40 AM UTC
Status: Investigating We are investigating SMS delivery issues in China. Affected components Verify (Degraded performance) Notify (Degraded performance)
- monitoring Sep 30, 2026, 10:25 AM UTC
Status: Monitoring SMS delivery to Chinese phone numbers remains degraded. We have made changes to how affected messages are sent and are monitoring delivery rates to see whether they improve. Affected components Verify (Degraded performance) Notify (Degraded performance)
- monitoring Sep 30, 2026, 11:35 AM UTC
Status: Monitoring SMS verification messages to mainland China are now being sent in English, including when Chinese is selected. We have also added a new delivery route for China. Delivery and conversion rates have returned to normal levels, and we are continuing to monitor them. Verification messages are not yet available in Chinese, so service remains degraded while we work to restore Chinese-language messages. Affected components Notify (Degraded performance) Verify (Degraded performance)
- resolved Oct 02, 2026, 12:02 PM UTC
Status: Resolved The SMS deliverability incident affecting China is now resolved. Affected components Verify (Operational) Notify (Operational)