The Collect SMS service allows users to send a SMS by having a sponsor (friend/family) pay for it. There are several modalities of the service:
- Collect SMS with prefix will allow the users to ask for SMS collect explicitly.
- Automated Collect SMS will allow the operator to handle all the messages not sent due to not enough balance in the same way but without prefixes.
- White Lists; users can preapprove friends & family in order not to be asked for approvals in every transaction.
Global Architecture from Merka's Collect SMS Solution (Prefix)