Two of Victoria's most widely used secure messaging services have seen volumes of exchange between each system increase by 15 per cent per month over the last year following a decision to support each other's directories and identity management systems.

Telstra Health, which markets the Argus secure messaging system, and Global Health, which runs ReferralNet, first got together in 2016 to try out message exchange between each system. In 2017, the two companies had a breakthrough when they achieved two-way secure messaging, with users of ReferralNet able to send messages to Argus users and vice versa.