Dear Executive Decision-Maker:
We've all got to change the way we do business in order to slow the rate of global warming. [insert company name] evidently doesn't understand that. If you did, you wouldn't be mass-mailing unsolicited advertising fliers on paper made from virgin paper pulp. Consider that the clear cutting of forests immediately releases large amounts of stored CO2 into the environment, while also removing a form of future CO2 storage. It's a double-whammy in terms of global warming -- and a triple whammy in terms of ecological destruction, if you consider the loss of habitat for wildlife that results.
Email is a much less wasteful and harmful way to reach potential clients. I would be willing to receive email bulletins from [insert company name] stores, provided there is an option to unsubscribe at any time, and you could assure me that my email address would not be shared with other companies.
IF, after careful consideration, you conclude that YOU MUST use unsolicited paper fliers in order to attract business, PLEASE, PLEASE HAVE THEM PRINTED ON 100% RECYCLED PAPER, and indicate this content somewhere on the flier. Doing so will show the public that [insert company name] is neither ignorant nor uncaring in the face of tremendous environmental threats to human survival that face us in the twenty-first century.
Thank you for hearing me out. The courtesy of a reply is requested.
At the bottom I include my email address, phone number, and the URL of my blog (to suggest that I may have some influence over public opinion). Notice that I've given the company permission to continue to advertise to me, but on my terms. I think it's important to give a little, while letting the seller know who's boss! These letters are pretty satisfying to toss-off. Go ahead and try writing one for yourself, and you'll see.