Clarkesworld intentionally went to electronic submissions to make it easier for international writers. International mail can be prohibitively expensive, and in a lot of places there's better internet access than there is reliable postage.
Am being sarcastic but I think my point is clear that way : someone not being able / willing to send something by mail is just not the audience for the magazine. *I cannot attend the Boston marathon coz of the distance, then perhaps they should find some equidistant place for it?
This absurd quest for "lowering the accessibility bar" to everything is making everyone jumping through hoops and no one is considering the cost of people who don't bother jumping through them...
The Australian group can sponsor some top local writer's work to the groups in other countries.