# Iterable: Subset of customers using Twilio for SMS seeing a portion of messages getting droppped

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2026-09-01 17:19 UTC · Resolved: 2026-09-01 18:17 UTC · Duration: 58 min
- Updates: 2 · Affected components: Global Campaign Sends
- [Vendor status page: https://stspg.io/m4sfvsr50s7f](https://stspg.io/m4sfvsr50s7f)
- [Company: Iterable](https://rewindex.com/company/iterable.md)

## Part of an outage event

- [Google Cloud us-central1 outage, Sep 1, 2026: 47 vendors, 54 incidents](https://rewindex.com/events/2026-09-01-google-cloud-us-central1)
- This incident is a second hop: it blames Twilio, which was affected by Google Cloud. (hop 2, posted +2 h 37 min vs Google Cloud’s own post)
- Evidence: “…Subset of customers using Twilio for SMS seeing a portion of messages getting droppped Twilio has reported that the issue causing 5xx errors on their side has resolved and we have seen SMS sends retur…”

```mermaid
flowchart LR
  root["Google Cloud us-central1<br/>posted 14:42 UTC"]:::root
  h1["Within an hour<br/>8 vendors, 8 blamed Google Cloud<br/>Pinecone, Elastic Cloud, FullStory +5"]:::blames
  root --> h1
  h4["1 to 4 hours later<br/>6 vendors, 6 blamed Google Cloud<br/>Apollo GraphQL, Temporal Cloud, Clerk +3"]:::blames
  root --> h4
  p0["GitHub<br/>posted +18 min, did not name Google Cloud"]:::timing
  root -.-> p0
  k0["Bolt.new<br/>+24 min"]:::hop2
  p0 -->|"blamed GitHub"| k0
  p1["Twilio<br/>posted +1 h 42 min, did not name Google Cloud"]:::timing
  root -.-> p1
  k1["Gorgias, Iterable<br/>+2 h 23 min to +2 h 37 min"]:::hop2
  p1 -->|"blamed Twilio"| k1
  me["Iterable (this incident)<br/>posted +2 h 37 min"]:::me
  p1 -->|"blamed Twilio"| me
```

_Detected automatically from incidents that started together and named the same provider; a link means one incident named another vendor, not a confirmed cause._

## Timeline of updates

- **identified** 2026-09-01 17:19 UTC: A subset of customers using Twilio for SMS sending may have some messages getting dropped due to an incident on Twilio’s side with impact currently ranging from 5%-20%. We are actively monitoring the impact and status updates from Twilio. There is not impact to customers using any other SMS providers. Next update: by 11:30am PT
- **resolved** 2026-09-01 18:17 UTC: Twilio has reported that the issue causing 5xx errors on their side has resolved and we have seen SMS sends return to normal. Customers using Twilio that saw sends get dropped should re-send those messages if they want to. No further updates will be posted.


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Canonical: https://rewindex.com/company/iterable/incidents/twyhdhz4dptv · Markdown: https://rewindex.com/company/iterable/incidents/twyhdhz4dptv.md · JSON: https://rewindex.com/api/v1/companies/iterable/incidents/twyhdhz4dptv · Generated 2026-10-20T00:03:40.262Z