mailbox_notification.yaml

automation:
  - id: 'mailbox_notification'
    alias: You have mail
    trigger:
      - entity_id: sensor.0x00158d000313108a_action
        platform: state
        to: 'vibration'
    condition: # Trying to prevent more than a single trigger every 20 seconds
      - condition: template
        value_template: '{{ as_timestamp(now()) - as_timestamp(states.automation.mailbox_notification.attributes.last_triggered) | int > 20 }}'
      - condition: template
        value_template: '{{ states.automation.mailbox_notification.attributes.last_triggered != none }}'
    action:
      - service: mqtt.publish
        data_template:
          topic: "/postled/warning"
          payload_template: "You have mail"
      - service: notify.telegram_notifier
        data:
          message: You have mail