The junk mail is one of the profits for Canada post, I personally put a sticky in my mailbox saying no junk mail. I have done a lot to avoid ads, it has not been inexpensive I have paid a lot of money to set up a system where I get very few peaces of junk mail, spam, or auto phone calls. Even though if you asked me I would have to tell you I have paid somewhere in the high hundreds (maybe $1000+) over the past ten or so years and I continue to pay lots of money (less now that I have started the buy Canadian thing) to keep me away from all the junk mail and spam the results have been priceless, Canada Post could help people with this.