The only thing that hinders Gmail's growth is the fact it's still an invitation-only service (except in the US and few other countries). PC World informs that, as of today, Australian and New Zealand residents can get a Gmail account without invitation.
"As we prepare to broaden availability, we have decided to launch these efforts in Australia and New Zealand first," said a Google Australia spokesperson. The Google representative said that Gmail will be out of beta when "strong internal metrics" will be met. Those who use Gmail know that there are days when Gmail is not accessible or is very slow, so there are still problem with scalability.
New Gmail features
Encrypt Gmail traffic
Newest Samsung Galaxy Note 3 ad features Robin Thicke
21 minutes ago