Promotional Bulk SMS route is used to send SMS with the objective of promoting a product or service. This category includes any sales & marketing messages that may or may not be solicited by the recipient
Yes, it's easy to schedule messages for delivery at a later date & time. One can also set an end date for your message to expire, to prevent it from being sent out after a specified date. If you need to change the time and date of the scheduled SMS, you can do so via the reports section of Messenger.