farm-2.x-dev/modules/core/data_stream/modules/notification/config/schema/data_stream_notification.delivery.schema.yml

# Schema for the data stream notification delivery plugins.

data_stream_notification.delivery.email:
  type: data_stream_notification_delivery
  mapping:
    email:
      type: sequence
      label: 'Emails'
      sequence:
        label: 'Email'
        type: email