Basically, its mail that you get that you never open and throw away immediately. Examples are circulars (even if you read it briefly), menus for restaurants you won't eat at, those bulky
local town magazines / newspapers (does anyone read this shit?). Also includes fake-looking and suspicious-looking
government, state or
legal documentation. Basically, about 80% of your mail is instantly trash aka instatrash
Includes variation insta-trash