I have come home, from an extended absence to a power failed refrigerator and it is not a pleasant thing, to say nothing of the cost of food replacement. As others have stated, I am not buying the electricians story as the breaker and breaker insertion were reviewed.
This may be a time to consider the Leviton Smart GFCI. It will at least let you know that there has been a fault and power will not be on the load side of it. Note it is not an overall power monitor and there would have to be power on the line side in order for it to send the message to the app.
Since you really just want to know if power is present you really don't care if it is absent due to ground fault, or overload, or line break. You just want to know if there is power. You might consider one of the MySpoot devices for this task.
Of course if you have a monitored fire/intrusion system it should let you know if there is a whole house power failure, but not down to the receptacle level unless you provide such a sensor.
https://store.leviton.com/products/...pfURIgQK_nzGq7WMC4gJ2b2bn104ta1BoC__0QAvD_BwE
Be alerted when power goes out: MySpool Power Failure Detector uses Wi-Fi to send text messages, email or push alerts when power goes off or comes back on Name each device and send notifications to identify the power outlet affected Each MySpool Power Failure Detector is independent; no hub is...
myspool.com