Canada Post Mail Slot

CanadaPost Slot of Doom by orionoreo canada post slot of doom I started selling paper products and was able to get away with using the slot of doom however, I want to start canada slot I send out a ton of mail for my business via oversized lettermail I have a slot of doom I was just wondering how it works

canada post slot of doom I send out a ton of mail for my business via oversized lettermail I have a slot of doom I was just wondering how it works