This may sounds funny but after installing Adobe Flash Player standalone version, Gmail web based notifications started to show up in NC
At least in Chrome, didn't check in Safari yet.
Just checked in Safari and it doesn't work.
Chrome works fine apparently after installing Flash Player...
The only issue is that as soon as the banner go away, it goes away from NC as well.
Some applications that work outside a browser aren't yet compatible with 2-step verification and cannot ask for verification codes, for example:
- Mail on your iPhone
- Email programs including Outlook, Apple Mail, or Thunderbird
- Android smartphones or tablets
- Google Sync via Exchange
- Calendar sync
- Google Notifier for Mac
I've been using Gmail Notifr for some years now, I've gotten so used to having it installed, when it broke in 10.8 I realised my whole workflow came to a halt.
I am using MailTab Pro for Gmail for $1.99 and it's great. No more need to have browser open since it has mobile / desktop mode.