"Pushover is a service on the web and app on your phone or tablet that acts as a gateway for the notifications that matter to you. It can alert you about practically anything, including job postings, if it's about to rain, emails from important people, or even if a motion sensor is activated in your home—and it can do it all on a schedule, so you don't receive notifications at times you'd rather not receive them. Below, we'll take a look at how Pushover works, walk through setting up sample notifications, then take a quick look at how you can do even more with Pushover using custom code."