The blacklist contains all numbers which have replied by STOP to your campaigns. This list therefore includes all numbers to not contact again.
This list is automatically generated at the reception of the responses, but you can also manually add numbers to it or import files. If you have a file of clients to not contact again, add it on our platform. Moreover, if a client contacts you to be on your blacklist, you must unsubscribe him of your sendings.
You will therefore not pay for an SMS your contact does not want to receive anyway.
Beware, numbers in the blacklist can never be contacted again, even if they are in your SMS alert list. They will therefore not receive those messages either. Indeed, this blacklist is joint for all your sending.