Being Canadian, the recent strike by Canada Post employees has created quite the backlog of mail. I just saw a postal worker filling up our community mailboxes. Pretty sure 90% of it will be spam! I wondered, does CP have a spam filter? Turns out they do! But it's a bit old-school... cause you have to just leave a note.
https://www.canadapost-postescanada.ca/cpc/en/personal/consumers-choice.page