I am looking for a way to see new emails that I received show up in the notification centre. Right now I am following the advice gleamed from this page but when new emails come in all that happens is that I get a notification on my desktop in the upper right corner. However, when I open the notification centre it says "no new notifications". This isn't terribly useful because I want to see all my new emails at a quick glance in the notification centre.
If I am away from my desk I am not going to be able to see all the emails that I missed.
Edit: I am using Safari on OSX 10.9.5