BI xPress is licensed per user, per machine where it is used. BI xPress Server is licensed per server instance with 5 client access licenses included. A client access license is assigned to a single user. Additional client access licenses can be purchased. Please contact email@example.com for more information.
BI xPress comes bundled and there is no way to only sell one feature of the product.
Yes, you can designate the reason for the message to go out and make your own custom message that you can share with others.
BI xPress Server provides the ability to monitor SSIS package execution as well as Reporting Services, making it easier to provide access to this information without the need to install the full BI