iphone email alerts issue

Hello,

I have an iphone 4S and for some reason although my email is getting pushed to my phone, the audible alert and the little red indicator on the app displaying the number of new emails no longer work. Similarly, the red indicator on on the Facebook app and other apps no longer display.

I have consulted the iphone online user guide and also the settings on my hone, but alerts all seem to bet set correctly as far as I can tell.

If anyone can help with this I'd be very grateful.

Thanks.