Do your contacts forget their appointments with you or not turn up at the right time?

Then Activity confirmations and reminders feature is a polite way to remind them not to let that happen again.

The message reminder feature will use the Act! Alarms you have setup for your Act! Activities, as a lead-time (advanced warning), and send a Text Message (SMS) directly to your phone as well as anyone else you would like to receive the reminder prior to the activity.