Snip & Sketch's save location behavior is . By default, screenshots are not automatically saved unless the user clicks the notification banner. The permanent storage folder is fixed to %UserProfile%\Pictures\Screenshots with no native option to change it. Users requiring a different save location must either:

%LOCALAPPDATA%\Packages\Microsoft.Windows.ShellExperienceHost_cw5n1h2txyewy\TempState\ScreenClip .