So you want to monitor your mailbox from your phone and get notified when someone is messing with your packages? Mail Beacon has you covered. It is a smart sensor that reports the status of your mailbox. It lets you know when you have mail or when the mailbox is full. If mail is removed without your permission, you will be alerted.
Mail Beacon is compatible with iOS and Android devices. The battery lasts for over a year. Like what you see? This is expected to ship early next year.[where to find it]