Do you think Redwood Alliance sends junk mail? Then send us a note, and we will remove you from our list. We only add folks to our list who have had some kind of contact with us, and we do not give our list to other groups.
Many organizations do send out bothersome, unsolicited mail. Vote against such things by either sending back their prepaid cards marked "NO JUNK MAIL!" or calling their toll-free phone numbers to complain and ask how they got your address. Find out who sold your address to them and call that company and complain to them, too. Some companies will not sell your address if you insist.
If enough of us do it, the companies will eventually find it much too costly to continue.