How to stop receiving unwanted mail Red Plum is the most widely received coupon circular. To remove a mailing address, folks should visit http://www.valassis.com/about-us/contact-us, and select “Remove Mailing Address” in the middle of the page. It can take up to 6 weeks, so be patient. ValPak is another coupon mailer. To opt out, visit https://www.valpak.com/coupons/show/mailinglistsuppression To…