I used an IVac relay to do this in our garage to control the outlet on the outside of the garage where I plug in Christmas lights and tools in the summer. I could most likely have gotten a relay and a box to fit it for a little less but I’d have to work at getting them to fit together so this was easier.
In this picture the power to the LZW30-SN is 15amp and the power to both outlets is 20 amp, the inside outlet is always powered the outside outlet is powered through the relay that the LZW30-SN controls.
The night light tells me if the mailman has come yet and is easier to notice when getting out of the car then the notification light on a sunny day.