There is a menu Send message available in web-cabinet for users:
source number - a sender's number, which receiver will see on his display.
destination numbers - numbers of receivers, to which a message will be directed.
In case if several numbers are specified, delivery to each recipient will be done separately.
require delivery receipt - if enabled, then when delivered in Message detail report one could see a tab Delivery receipt, which will contain delivery details.
See also: