Send Prowl notifications natively from PowerShell.
Prowl enables you to send push notifications to iOS devices. http://www.prowlapp.com/
Notifications are sent to Prowl's servers and are subsequently delivered via Apple's Push Notification Service (APNS). The app is $2.99 US (as of this writing) but notifications beyond that are free, making it a very inexpensive alternative to SMS for automated alerting. It's also possible to attach a URL to the notification, which can open a link in a web browser or launch a specific application.
PowerProwl comes in two flavors; as a module with an advanced function and as a standalone script version of the Send-ProwlNotification advanced function / Cmdlet . The module fully implements the Prowl API, supporting features such as API key validation and key registration for providers, while the standalone script only sends push notifications.