What is a screenshot tray?
A screenshot tray is a short strip on screen that holds your recent screenshots, so you can drag them into a chat, email or folder without hunting for the file. It is a waiting place, not a gallery.
Why it matters
A macOS screenshot usually lands on the Desktop, or in a corner preview that disappears if you look away. Then you find it, maybe rename it, and drag it out. A tray removes the hunting step.
How NotchStar’s tray works
Screenshots hang in a row under the notch. The tray holds up to 12, and each stays for five minutes unless you use it. Sending or copying a screenshot removes it from the tray. Command click picks several, and holding Option while you drag sends every screenshot in the tray. Hovering or clicking a screenshot does not open the notch.
What it never does
When a screenshot leaves the tray, the file is not touched. It is still in the folder where macOS saved it. Dragging a screenshot to the Trash does delete the file. An optional setting, Show screenshots instantly, turns off the macOS corner preview and puts it back when NotchStar quits.
Other notch apps also show screenshots, so this is not unique to NotchStar. Compare them in Mac screenshot tray apps.
Related
Read how to share screenshots from the Mac notch, the Screenshot Tray feature page, and the neighbouring idea of a file shelf.