Setting validity rules for a text message campaign
Setting Your Message Validity
If the recipient phone is switched on then the message will arrive within seconds of being transmitted. However, what if you have a time limited promotion and the clients switches on AFTER the event?
By setting a Message Validity you can ensure that messages will not be delivered after this time.
Expand the Advanced Options area. Select the date and time when you would like to expire the message. If the handset is switched on after this time it will not be delivered.