Trip Reminders are sent 24 hours prior to every leg of a trip, if the flight legs are more than 24 hours apart.
To enable or disable Trip Reminders at the Group level, please go to your Account Settings.
Select Manage Trip Groups:
Select the Trip Group you want to check on.
You can toggle Trip Reminders on or off at the bottom section of the Edit Trip Group page:
To save your changes, click the Save button in the lower right-hand corner.