DENVER -- Do you have unwanted catalogs and junk mail clogging your mailbox?

Help save the earth and get rid of all that junk mail by signing up for Catalog Choice, a program to help you opt out of hundreds of catalogs.

You sign up with your name, address and password and then go through a list of 1,000 catalogs to indicate the ones you no longer want. The free service sends your name and information to those catalog companies to tell them to remove you from their mailing lists.

Not only is it hassle free -- think about how you're helping the environment.

There's an estimated 19 billion catalogs mailed out to American consumers each year, and the majority of it is unsolicited, ending up in our landfills, the organization said.

According to Catalog Choice, it requires 53 million trees to produce the 3.6 million tons of catalog paper every year. The energy it takes to make the catalogs and ship them to everyone's home produces 5.2 million tons of carbon dioxide, equal to the annual emissions of two million cars, the site said.

The site is the work of three nonprofit environmental groups -- the Natural Resource Defense Council, the Ecology Center and the National Wildlife Federation.

So far, the retailers at the top of Catalog Choice's opt-out list are L.L. Bean, Lands' End, Pottery Barn, Victoria's Secret and Eddie Bauer, the company said.

If you want to get rid of junk mail, you might also try ProQuo, which will remove your name and personal information from thousands of direct marketing lists and organizations.

The free service will either electronically transmit your opt-out requests on your behalf or guide you through the removal process, which for some lists, may require you to mail in a handwritten opt-out request.

The Direct Marketing Association also runs a Mail Preference Service that, for $1, will keep your name on a do-not-mail list for three years. However, it does not stop catalogs and other mail solicitations from flooding your mailbox.