POS SOFTWARE
Many of our clients use Australia Post as a delivery agent. If your clients need your goods to arrive by Christmas, you should send them now because of all the disruption. Australia Post will not commit to delivery estimates now, even with express post.
The official cut-off dates for sending for Christmas are:
Inside Australia:
Sending internationally: Your too late, almost everywhere there are delays, and some like surprisingly like Ireland and Pitcairn are suspended.
I would suggest that you set our software delivery options to reflect this.