Below are the various delivery report (DLR) status that will be available on our platform when an SMS is submitted.
- Sent: This is the status that is updated at our end when an SMS is submitted to the operator. This means that the SMS was well received on our server and processed. This report is not returned back as DLR
- Accepted: This is a response from certain operators stating that they have successfully accepted the message to forward to the mobile handset. Not all operators do provide this report.
- Delivered: This status means that the message was successfully delivered to the handset and got confirmation back. Only in rare cases where the operator implements Do Not Disturb (DND or Unsubscribe) list, they return the status as Delivered even if the number is present in DND.
- Error: This status means that we were not able to submit the particular message to the operator successfully or there was an error from the operators side in sending the message. This could be due to connectivity issues.
Operators will also return this status if the mobile number is incorrect (Length, code, etc). For example in UAE if we try to send an SMS with the code 97140XXXXX, then this will be returned as Error.
- Undelivered: This status indicates that the particular message could not be delivered to the handset. The reason can vary from operator to operator. Various reasons for this are: Non existing number, Temporarily out of service, Disconnection due to non bill payment. Undelivered status is also returned by many of the operators who have DND features set and if the mobile number is in their DND list.
- Expired: Expired status means that the operator was not able to send the SMS to the recipient within the time frame specified. Timeframe varies from operator to operator and how we set during SMPP submission. This can be between 4 hours to 24 hours.
- Unsubscribed: This status is for those numbers that have requested directly through our platform to be Unsubscribed from any marketing SMS. If a number is present in the list, then they are automatically removed from the final broadcast. This list does not reflect any of the DND numbers from the operators.
