Do you drag-and-drop to a folder on your hard drive, or to a box on your website, or to something else? Also, do Crates, as I assume they're called, expire? As

Do you drag-and-drop to a folder on your hard drive, or to a box on your website, or to something else? Also, do Crates, as I assume they're called, expire? As in, I can set a folder that deletes files an hour, day, week, etc after they're dropped there.