You can export a list of all your existing users in your Cast through Users and Groups.
1. Log in to the Admin Dashboard.
2. Go to Users and Groups.
3. Select Export CSV.
4. Wait for the CSV file to be downloaded to your computer/device.
5. The exported CSV file will contain the complete list of registered users. This also includes details such as the user’s uuid, full name, email address, date when the account was created, date when the account was updated, date when the confirmation instructions was sent to the user, and the date when the account was confirmed.