Meet the GATE Mailbox: a smart mailbox that learns your local mail delivery patterns and alerts you when your mail arrives. It has a predictive system to give you an idea when you can expect to get new items every day. GATE has Mailbox and Home units to get the job done. You get a line of sight range of up to 500 feet, which can be extended with GATE+.
The GATE mailbox can work with your Z-Wave home automation network. It has motion sensors built-in. The companion app runs on iOS/Android devices. It works with Nest and IFTTT. You can find out more here.