One in three pieces of international mail opened by authorities in the past year contained something illegal or banned.
The Australian Border Force inspected almost 61 million international mail items, about 20 million more than a few years ago. More than 236,000 were then physically examined on suspicion that something wasn't right.
About 81,000 (or 32%) of those resulted in the detection of an illicit good or prohibited item, ranging from drugs to firearms.
Last financial year, about 18.7 tonnes of tobacco was detected in international mail, which is about 44 million cigarettes worth. While the form drugs arrive in varies, from a handful of cannabis seeds or a couple of pills to tens of kilograms of illicit products.
About 150 million pieces of international mail come to Australia every year.