Custom methods

To provide a custom method to send messages, a module must create a class within src/Plugin/SenderMethod folder that implements the \Drupal\sender\Plugin\SenderMethod\SenderMethodInterface. This class must have the @SenderMethod annotation in the comments above it.

The \Drupal\sender\Plugin\SenderMethod\SenderMethodBase class is available to provide default behavior for custom methods and should be extended by them. Doing so, the custom method just have to implement the \Drupal\sender\Plugin\SenderMethod\SenderMethodInterface::send() method.

Please check \Drupal\sender\Plugin\SenderMethod\EmailMethod for a real example.