Conversation & REST APIs - Delivery Receipt Issue

What to do

• Check whether you use Sinch SMS, REST - US, REST - EU, REST - AU and 2 more in eu, us. Check your stack

  Paste a package.json, lockfile, Terraform or a list of domains at down.guide/stack to see every provider you depend on.

• Confirm your retries, queues and scheduled jobs caught up after the 2h 44m it lasted.

  Anything that failed between 2026-05-06 14:33 UTC and 2026-05-06 17:17 UTC may need a replay.

• Subscribe to Sinch's feed to hear about the next one first. RSS feed

  https://down.guide/feed?provider=sinch works in Slack (/feed subscribe), Discord feed bots and any RSS reader.

Updates from Sinch 3

1. investigatingMay 6, 2026, 2:33 PM UTC

   We are currently experiencing an issue with our Conversation and REST APIs. Incident Start Time: 2026-05-05 07:00 UTC Impact: A subset of Delivery Receipts for concatenated messages will receive an unknown state if submitted via the Conversation or REST APIs. We will provide ongoing updates on this page. For any inquiries, please contact us at support@sinch.com.

   provider

2. monitoringMay 6, 2026, 4:22 PM UTC

   A fix has been implemented and we are monitoring the results.

   provider

3. resolvedMay 6, 2026, 5:17 PM UTC

   This incident has been resolved. Incident Start Time: 2026-05-05 07:00 UTC Incident End Time: 2026-05-06 16:16 UTC

   provider

Corrections

None so far.

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