I have a PHP web app which is successfully sending 'instant' notifications to iOS users via the Prowl API and Android users via the Notify my Android API.

Is there a similar app/service for Windows 8 phone users with an API I can hook into?

I read about Toasty for Windows 7 phone but speaking to a Windows 8 phone user, he said most Win 7 phone stuff just doesn't work on Windows 8. I cannot find reference to a Toasty app for windows 8 phone, there is a lot of stuff about toasty notifications in Windows 8 but that seems to be the built in local notification system you have to write an App for. I don't want to write an App, I want an existing one I can send notifications to.

Any tips much appreciated!