Australia Post requires recipients to sign for packages by default.
However, if you would prefer to have your package left in a safe place such as your doorstep or letterbox, you can select the ATL (Authority To Leave) option at checkout. In the comments section at checkout, you also have the option to provide delivery instructions to be indicated on your package.
Please note that for Express Post, you cannot select 'signature required on delivery.’
Any packages marked ATL cannot be replaced if they go missing, so please bear in mind that this option is at your own risk.