Mu-43.com now offers push notifications for PMs (conversations), posts, threads, and more. This is accomplished via a 3rd party free app called Pushbullet, which can deliver push alerts to all sorts of devices (Android, iOS, Windows, desktop browsers, etc). Here are the steps to make it happen: Head to this page and select "Associate with Pushbullet" to start the process. Signing up for a Pushbullet account is very quick and easy if you have a Google (Gmail) or Facebook account. Install the Pushbullet app on your device (or the extension on your browser). That's all there is to it. Works really well in my testing - would love to get some feedback as to how it's working for you.