Outage in Zipwhip

SMS Delivery Receipt Delays from Twilio to Mobitel Sri Lanka

Resolved Minor

March 16, 2026 - Started about 1 month ago - Lasted about 4 hours
Official incident page

Incident Report

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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Latest Updates ( sorted recent to last )

RESOLVED about 1 month 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 about 1 month 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 about 1 month 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 about 1 month ago - at 03/16/2026 06:20AM

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