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Mail comes in many different sizes, forms and textures, but the key ingredient to most mail is paper. While about one-third of all paper is made from recycled material, the Sierra Club estimates that about 900 million trees are cut down annually for the production of paper worldwide. Although trees are renewable over time, increased recycling eases demand for trees and preserves habitat where logging occurs.

Mail, or “mixed paper,” is the term used to define the many kinds of paper products that can be collected and recycled from our daily mail. It is a broad category that can be difficult to define precisely, and often varies from one location to another. Generally, mail can be broken down into three main categories.