The Message ID is a unique identification string you receive when you send an SMS to the Sinch platform. The type of Message ID returned differs based on SMS API service you use in the Sinch ecosystem.
To find your message ID, there are two options:
Option 1 - From your API response (recommended for developers)
Below are the different SMS APIs and an explanation of the Message ID’s generated by them:
| Sample of Message ID generated when a SMS is sent to Sinch | Notes | |
| SMPP | 195d2b9b17900005edfb3216e339297e | 32 characters long and starts with 19. This is also known as the Sinch Message ID and you may find this on the submit_sm_resp PDU received upon successful message submission. |
| REST API | 01JQ9BG6A4ZKTSYY9J9VV1ZEYT | This is referred to as the Batch ID. It is included in the response payload returned by the server upon successful message submission. |
| MAD API | 01JQ9BG6HQ9534A6AR4780NYKD or 6020828154 |
This is referred to as the MAD ID. It is included in the response payload returned by the server upon successful message submission. |
Option 2 - From the Sinch Build Dashboard
1. Log in to the Sinch Build Dashboard
2. Go to SMS → Message Search
3. Filter by date range and/or destination number
4. Click View message on the relevant row — the Message ID is shown in the details.
Learn more: Searching for SMS Messages using the Build Dashboard.
Note: A Message ID will only be generated for a message accepted by our server. If the message submission is rejected by the server, we recommend you to contact Sinch Support and share a PCAP trace of the rejected message along with the error code encountered for further investigation.
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