Our sorting equipment needs the item to be flexible enough to bend around rollers without damaging your mail item or causing damage to our equipment.

To ensure the best flexibility, your mail item should bend around a circular surface.

Oversize items

Oversize items don’t have to bend. You may package them in material that’s either flexible or rigid, such as paperboard or corrugated cardboard.

Cardboard boxes may have difficulty entering our mail processing machines. In certain cases, we allow boxes if they're enclosed in an envelope or wrapper that covers their sharp edges enough to enable a smooth entrance into the machines. If you plan to include cardboard boxes in your mail items, we recommend you first have them assessed by a Canada Post representative.