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Outage in Twilio

SMS Delivery Receipt Delays from Twilio to Mobitel Sri Lanka

Resolved Minor
March 16, 2026 - Started 20 days ago - Lasted about 4 hours
Official incident page

Incident Report

Summary AI Generated

Twilio experienced SMS delivery receipt delays for messages sent to Mobitel network subscribers in Sri Lanka, affecting the APAC SMS service for 4 hours. While SMS messages were still being delivered successfully, customers experienced delays in receiving delivery confirmation receipts. The issue was resolved and SMS delivery receipts returned to normal operation.

Twilio customers may be experiencing SMS delivery receipt delays from Twilio to Mobitel network subscribers in Sri Lanka. Our team is actively investigating this issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 1 hour or as soon as more information becomes available.
Components affected
Twilio SMS, APAC

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Latest Updates ( sorted recent to last )
RESOLVED 19 days ago - at 03/16/2026 10:17AM

The incident has been resolved and SMS delivery receipts from Twilio to Mobitel network subscribers in Sri Lanka are operating normally.

MONITORING 19 days ago - at 03/16/2026 09:01AM

We have observed a recovery in SMS delivery receipts from Twilio to Mobitel network subscribers in Sri Lanka and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.

INVESTIGATING 20 days ago - at 03/16/2026 07:19AM

Twilio customers may be experiencing SMS delivery receipt delays from Twilio to Mobitel network subscribers in Sri Lanka. Our team is continuing to investigate this issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 2 hours or as soon as more information becomes available.

INVESTIGATING 20 days ago - at 03/16/2026 06:20AM

Twilio customers may be experiencing SMS delivery receipt delays from Twilio to Mobitel network subscribers in Sri Lanka. Our team is actively investigating this issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 1 hour or as soon as more information becomes available.

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