MAILBOX Alert is a smart device inside your mailbox that sends out an alert when your mailbox is opened. That alert is a one time message, either via email or text, or both. Optionally, this device can also send you pushbullet notifications. MAILBOX Alert is configured to use your WiFi. The WiFi setup takes a few minutes with a smart phone or a laptop.
Be alerted when power goes out: Power Failure Alert uses Wi-Fi to send text messages and emails when power goes off or comes back on. As long as there is a WiFi network available when A/C power outlet being monitored loses power, a notification is sent. This device is available in limited quantities here. UPDATE: Sold out, expecting more July 7, 2020.