The address matching approval system and change of address data managed by Australia Post are included in the deal with QAS, which was initially involved with the service to flag data relevant to prove customer identity.

First Direct, a division of Australia Post, handles the licensing arrangements for the data created via AP's in-house development program called the address matching approval system.

The data, captured by QuickAddress Pro and developed by QAS, is used to automatically track a change in address and check names as they are registered with the Australia Post's National Change of Address File which references some 11.7 million Australian addresses. The system helps track some three million people - or 17 percent - who change addresses each year.

Glenn Parker, managing director of QAS, said one of the main reasons for its initial approach to Australia Post was to reduce the incidence for its business customers of mail marked 'return to sender'. QAS was working towards a system that enabled addresses to be flagged in order to notify customers of the relevant data needed to identify changed addresses, he said.

"Australia Post is more an operational-based service whereas we are the enabler of the data, but the data has probably been available for many years. Australia Post is trying to create an incentive because return-to-sender mail is a big cost to business and Australia Post alike," Parker said.