The default notification is sent via email. However, people can add secondary email addresses, and SMS text numbers for notifications. This is done on the "Communication Settings" page. Log in to WorshipPlanning.com, click on your name in the upper right corner (and My Profile, if you have the option) then the "Communication Settings" tab.
*Planners may need to check the box next to the Helper's phone number to enable the SMS notifications for that number.