Source note · Troubleshooting business SMS that is not delivered
Twilio distinguishes undelivered (a delivery receipt said the message was not delivered) from failed (the message never left Twilio, for example queue overflow, account suspension or media errors).
Checked 2026-10-02
- Vendor
- Twilio
- Product
- Twilio Programmable Messaging
- Subsystem
- delivery receipts
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-10-02
- Checked
- 2026-10-02
Sources
- Message resource — Twilio · tier 2 current vendor documentation · Message status values, undelivered and failed
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting business SMS that is not delivered: source note business-sms-delivery-troubleshooting-msg-status-undelivered. WarmTransfer. https://warmtransfer.net/knowledge/claims/business-sms-delivery-troubleshooting-msg-status-undelivered
BibTeX
@misc{warmtransfer-claim-business-sms-delivery-troubleshooting-msg-status-undelivered,
title = {Troubleshooting business SMS that is not delivered: source note business-sms-delivery-troubleshooting-msg-status-undelivered},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/business-sms-delivery-troubleshooting-msg-status-undelivered},
note = {Source note business-sms-delivery-troubleshooting-msg-status-undelivered, checked 2026-10-02}
}