What does Express Post mean and is it overnight?

For our shipping purposes, the use of Express Post is related to a combination of the transit time and the quality of support from Australia Post and not necessarily the handling time of your order. If eParcel Express Post parcels are lost or delayed these issues are attended to by Australia Post as a priority over a similar issue with a standard eParcel shipment

Australia Post does not offer an overnight guarantee for eParcel Express Post and only offers an estimated delivery time. This does mean that we may take this into account and delay the shipping until we can be sure that your delivery will go as smoothly as possible.