Re:Slightly misleading. (Score 1)

You can place a "No Admail please" note inside your mailbox to stop delivery of unaddressed mail.
Or call and ask them to not send you ad mail and the unaddressed stuff won't even leave the sorting office.
See https://www.canadapost.ca/cpo/mc/personal/support/helpcentre/receiving/admail_stop.jsf?ssl=1