Sinch Outage History

Sinch experienced a network disturbance at their US7 site that affected SMPP, HTTP SMS, and HTTP lookup API endpoints for 6 minutes. The incident impacted US-based SMPP, HTTP, and REST services, with clients advised to use corresponding US1 redundant endpoints to maintain service continuity. The issue was resolved after engineers investigated and restored normal operations.

Sinch Engage Legacy experienced a service disruption where clients encountered errors when attempting to create new message templates through the "Create a template" option, affecting multiple accounts. The issue was identified within 5 minutes of investigation beginning, and a fix was implemented. The incident lasted 2.1 hours before resolution.

Sinch experienced SMS delivery issues with Telefonica Costa Rica, causing delayed mobile-terminated and mobile-originated messages along with missing or late delivery receipts. The incident affected SMS services in the LATAM region for approximately 3.3 hours from April 12, 2026 01:55 UTC to 06:18 UTC before being resolved.

Sinch experienced SMS delivery issues with the Tigo network in Colombia, causing delayed mobile-terminated and mobile-originated messages along with missing or late delivery receipts. The incident affected SMS services in the LATAM region and was resolved after approximately 41 minutes.

Sinch experienced SMS delivery issues to Brazil's Algar Telecom network from April 10, 2026 at 04:00 UTC to 23:00 UTC, lasting 11.8 hours. The incident caused delayed mobile-terminated and mobile-originated messages, along with missing and late delivery receipts for the LATAM SMS service. The issue was resolved on April 10 at 23:00 UTC after ongoing investigation throughout the day.

Sinch's DI SMS 365 (iSMS) platform experienced potential delays in message delivery for some customers, affecting both mobile terminating and mobile originated traffic as well as delivery receipt notifications. The incident was detected by internal monitoring and lasted approximately 1.7 hours before being resolved. Report Manager access and statistics remained unaffected during the incident.

Sinch experienced SMS delivery issues specifically affecting AT&T network traffic in Mexico, causing delayed mobile-terminated and mobile-originated messages along with missing or late delivery receipts. The incident affected SMS services in the LATAM region and lasted approximately 1.3 hours from 22:02 UTC to 23:25 UTC on April 9, 2026. The service was fully restored and the incident was resolved.

Sinch experienced a global performance degradation affecting their OKTA Verification service, causing customers to encounter delayed or failed verification attempts via the Okta endpoint. The incident impacted SMS Verification and Verification Text to Speech components for 2 hours and 22 minutes, from 13:00 UTC to 15:22 UTC on April 8, 2026. The service degradation was resolved and normal operations were restored.

Sinch experienced SMS delivery issues with DigiMobile in Spain from 07:52 to 10:30 UTC on April 8, 2026. The incident caused delayed mobile-terminated and mobile-originated messages, along with missing or late delivery receipts. The issue was resolved after approximately 2.6 hours, affecting SMS services in the EMEA region.

Sinch experienced SMS delivery issues with AT&T in Mexico from 07:23 to 10:48 UTC on April 8, 2026, lasting approximately 2.7 hours. The incident caused delayed mobile-terminated and mobile-originated messages, along with missing and late delivery receipts for the LATAM SMS service. The issue was resolved after investigation and monitoring.