Australia Post provide free express post labels for eParcel, but they are in landscape format (standard post ones are portrait format). Maropost have advised that it is not possible for their system to print express post labels in landscape mode on a standard printer (A4 page), even though this is possible through the AP portal.
Not sure how this can be possible but would love for this to be fixed, so that eParcel Express Post labels can be printed on the AP labels provided.