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Outage in Twilio

SMS Delivery Receipt Delays from Twilio to MTN Swaziland

Resolved Minor
September 14, 2026 - Started about 4 hours ago - Lasted about 4 hours
Official incident page

Incident Report

Summary AI Generated

Twilio experienced a 4.3-hour incident where SMS delivery receipts to MTN network subscribers in Swaziland were delayed, affecting the SMS component in the Middle East & Africa region. While messages themselves continued to deliver successfully, customers were unable to receive timely confirmation of delivery status. The issue was identified, monitored through observed recovery periods, and fully resolved with delivery receipts returning to normal operation.

Twilio customers may be experiencing SMS delivery receipt delays from Twilio to MTN network subscribers in Swaziland. 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, Middle East & Africa

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Latest Updates ( sorted recent to last )
RESOLVED 8 minutes ago - at 09/15/2026 04:44AM

The incident has been resolved and SMS delivery receipts from Twilio to MTN network subscribers in Swaziland are operating normally.

MONITORING about 1 hour ago - at 09/15/2026 03:57AM

We have observed a recovery in SMS delivery receipts from Twilio to MTN network subscribers in Swaziland and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.

MONITORING about 3 hours ago - at 09/15/2026 01:56AM

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

IDENTIFIED about 4 hours ago - at 09/15/2026 12:46AM

Twilio customers may be experiencing SMS delivery receipt delays from Twilio to MTN network subscribers in Swaziland. Our team has identified the cause, and is working to resolve the 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.

INVESTIGATING about 4 hours ago - at 09/15/2026 12:31AM

Twilio customers may be experiencing SMS delivery receipt delays from Twilio to MTN network subscribers in Swaziland. 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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