An alternative to Pushover that you might be interested in if you're still using ST is this Hubitat driver and ST app: Route Hubitat Notifications to SmartThings (App and Driver)
It implements both the notification and speech synthesis capabilities, the latter of which is really only there to work around earlier limitations of Hubitat and apps that didn't allow you to select true "notification" devices (anything you told/tell it to do via TTS also just sends a notification). As you might expect, it sends notifications through the ST app--convenient if you still have it, and because it all goes through the cloud, your ST hub doesn't even need to be online.
