The activity messaging feature for sending text message confirmations and reminders relating to activities is based on text messages being placed in a message queue at the time the activity is scheduled. This creates a problem in that if the activity is re-scheduled or cancelled (deleted) then the text message would still be in the message queue waiting to send. There is also no visibility of this as there is nothing in the calendar to advise the user that there is a text message still waiting to send even though the activity is no longer in the calendar at the time the message reminder is planned to send.

The latest release will automatically add Text Message confirmations and reminders to your Calendar when scheduling meetings, appointments or and other type of activities (even your own custom activity types).