How do I stop delivery of Admail items to my home or business?

To stop receiving unaddressed advertisements such as coupons, flyers and newspapers, free magazines, catalogues, and municipal service notices (e.g. schedule of snow removal, changes in garbage pickup, etc.), place a note in or on your mailbox stating that you do not wish to receive Unaddressed Admail™.
The only unaddressed materials that we will continue to deliver are some community newspapers, as well as mailings from the House of Commons, provincial chief electoral officers, municipal electoral offices and Elections Canada.
We are required by law to deliver any mail that bears your address (including some advertising material). Please note that since Canada Post is only one of many distributors of unaddressed materials, you may continue to receive these materials from other distributors.

Ticket Details

https://www.canadapost.ca/cpo/mc/personal/support/helpcentre/receiving/admail_stop.jsf?ssl=1
 Type: I want to stop receiving Admail