This tutorial explains how to send messages to all campers or select campers registered for a specific camp.
Log in to Rank One and select Camps & Commerce under the Camps tab.
Find the desired camp in Manage Camps and click the Registrants link to bring up a list of all registrants for that camp.
The registrants page shows a list of all campers signed up for the camp. From this screen you can send a message to ALL or SOME campers:
Enter your message subject and message details. Under Notification Type, choose how you would like to send the message:
When you are ready, click Send Message.