Key Expiration Reminder
Allows you to notify the user that the registration will soon expire. The feature works only if the registration key has an expiration date.
Show Registration Key Reminder - enables the key expiration reminder message to be shown.
Start to show reminder (days before expiration) - specify the number of days before the key expiration when the user should get a reminder message. Click the "Design Message" button to design a reminder message, see Message Designer for more information.