If you have used a booking method or an enrolment, you can display all course members via the Members management, contact them by email and export a member list.
What you have to do
In your course, click on "Members management" under "Administration".
The Members management opens.
Click in the "Members" tab.
A list of all registered participants opens.
Click the download icon on the right above the list of participants.
The window for saving the list of participants opens.
Save the Excel file.
Close the Members management with the red cross (top right).