Why does the notify portion of the automation not work?

The automation to turn the switch on seems to be working, but the notifier never trips. What is wrong here?

Thanks Matt

- id: "Basement heat on if below 5F"
  alias: 'Basement heat on if below 5F'
  initial_state: true
  trigger:
    platform: numeric_state
    entity_id: sensor.pws_temp_f
    below: 5.0
  action:
  - service: switch.turn_on
    data:
      entity_id: switch.basement_heater
  - service: notify.sms_matt
    data:
      title: "Basement heat on"

Have you tried enabling debug for your sms-component? Also, what happens if you use this instead?

- id: "Basement heat on if below 5F"
  alias: 'Basement heat on if below 5F'
  initial_state: true
  trigger:
    platform: numeric_state
    entity_id: sensor.pws_temp_f
    below: 5.0
  action:
  - service: switch.turn_on
    data:
      entity_id: switch.basement_heater
  - service: notify.sms_matt
    data:
      message: "Basement heat on"

Your actions don’t look indented correctly to me…

  action:
    - service: switch.turn_on
      data:
        entity_id: switch.basement_heater
    - service: notify.sms_matt
      data:
        title: "Basement heat on"