YouShop users most frequently bought clothes and accessories, with Amazon the most popular website in both the UK and US. Zara and Asos, the 'fast-fashion' chains, and online auction site eBay were among the most popular UK websites for Kiwi shoppers using YouShop, while Mac, the makeup brand, Gap and Ralph Lauren were the top US online retailers.
Shoes, cosmetics, electronics and home and kitchenwares were the most common products bought, said Brophy.
He declined to give figures for average spend per YouShop customer. It charges about $36 to ship a US$119 pair of running shoes to New Zealand from its Oregon delivery address. FedEx's international economy rate would amount to about $48, based on figures posted by a US-based online shoe retailer.
Brophy said YouShop typically steps up marketing when the New Zealand dollar is strong against the greenback or the pound and kiwis can benefit from the increased spending power of their currency.
While a large proportion of users were once or twice monthly shoppers, looking for gifts or bargains, the top 10 percent were frequent users, with some small businesses making the service a core part of their operations.
"We have a view of our users in terms of their value and in terms of the amount of parcels they're shipping using our service," Brophy said. "We see at the top end, in the top 10 percent of users, the real savvy or pro shoppers who use the service really well and know where to go to get their deals. We're probably seeing a little bit of small business usage at that top end as well."
Last year NZ Post said it was cutting as many as 2,000 jobs over the next three years and scaling back physical mail deliveries in a bid to return to profitability. It's chasing growth by focusing on logistics and parcel deliveries while expanding the wealth and insurance offerings of its Kiwibank unit.
YouShop "is very strategically aligned in terms of the core business focus now being in mail logistics and financial services," Brophy said. "Logistics is all about growth and increasing parcel volumes. We see the potential to continue growing it. "