Bulk SMS service has four functional units.
The UsersBulk SMS GatewaysMobile Network Operators (E.g. MTN, GLO, Airtel and 9mobile)Recipients
Users
These are individuals, businesses, organizations etc. who use bulk SMS service to promote their business, generate leads, send informative messages, etc. These Users use a bulk SMS gateway to send messages or to view message delivery reports, etc. They are the beneficiaries of bulk SMS service.