All classes that implement EmailEventInterface in Commerce Email 8
- class \Drupal\commerce_email\Plugin\Commerce\EmailEvent\CheckoutCompletionRegister
- class \Drupal\commerce_email\Plugin\Commerce\EmailEvent\EmailEventBase implements EmailEventInterface
- class \Drupal\commerce_email\Plugin\Commerce\EmailEvent\OrderPaid
- class \Drupal\commerce_email\Plugin\Commerce\EmailEvent\OrderPlaced