The ban and age verification requirements apply to pretty much all services which allow communication of information between people, unless an exemption is granted by the minister.

There is no legislated exemption for instant messaging, SMS, email, email lists, chat rooms, forums, blogs, voice calls, etc.

It's a wildly broadly applicable piece of legislation that seems ripe to be abused in the future, just like we've seen with anti-terror and anti-hate-symbol legislation.

From 63C (1) of the legislation:

For the purposes of this Act, age-restricted social media platform means:

• a) an electronic service that satisfies the following conditions:
  • i) the sole purpose, or a significant purpose, of the service is to enable online social interaction between 2 or more end-users;
  • ii) the service allows end-users to link to, or interact with, some or all of the other end-users;
  • iii) the service allows end-users to post material on the service;
  • iv) such other conditions (if any) as are set out in the legislative rules; or
• b) an electronic service specified in the legislative rules; but does not include a service mentioned in subsection (6).

Here's all the detail of what the bill is and the concerns raised in parliament.