I am referring to the bar towards the top of the screen where icons of new messages etc. appear, between the 'search' magnifying glass on the right and the sound profile icon on the left.
When you touch it you get a list of unread emails, texts, calendar and missed phone calls.
How is this customised? Previously I had the above items in that order but now the emails have disappeared and texts are at the top even when there are new unread messages.