IFTTT Notifications - JRInge/ha GitHub Wiki

script.ifttt_notification sends an alert message to the If This Then That service, containing up to three values. This can then be called in an automation action like this:

action:
- service: script.ifttt_notification
  data:
    title: Alert title
    message: Message string
    url: Optional extra data

On IFTTT, an applet is set up so that if the Maker service webhook receives an event called ha_alert then it displays a rich message, using the data above. The applet could use the url as either a link or an image, but can't easily do both due to the limitation of only being able to pass three parameters.