Here’s an easy guide to the different postcard sizes you can choose :
Jumbo Postcard – 240mm x 130mm
This is the biggest postcard that Australia Post will still class as a small letter if you would like to mail your postcards or choose to have them delivered via the Unaddressed Delivery System, meaning you will save a lot of postage. The postcard allows for you to create a great marketing message and stands out wherever it lands.
Standard Postcard – 105mm x 148mm
This is a small A6 size postcard, most likely the most common of the postcards that you see. Imagine an A4 letter then fold twice, this is A6 size. Even if you want to address this postcard there is space to add the address. Ask us about the Australia Post specifications for mailing and adding your return address.
DL Postcard – 99mm x 210mm
DL stands for dimension lengthwise and is a common size for postcards and promotional materials. It is also exactly a third the size of A4 size.