SMS’s that are sent with the objective of promoting a product/service. These usually includes sales & marketing SMS’s which may or may not be solicited by the recipient.
SMS’s that are sent to your customers with the purpose of passing on information necessary for using your product or service. Below are two examples:
a) SMS sent for two factor authentication, one-time passwords, etc.
b) Notifications regarding product/service to an existing customer such as appointment reminders, etc.