I have IPhone 3G for almost 2 years now, and I am planning to buy new Iphone4, but I miss one thing.... I really miss it... desperately

That thing is one small, mail notification. Ok, you will say it exists as badge, but you have to unlock phone and look see if mail is received. SMS, and missed calls (Facebook, ...), for example comes as nice pop-up window, and I don't know why this feature don't exist for e-mail...
I saw, there are some mail client apps that has pop-up, but they support only POP and Gmail protocol, and I use my company's Exchange server with push.
Is there any app (could be from Cydia, I have no problem with jailbraking device) which enables this small but important feature?
I've written mail to Apple to include this feature in next iOS release, but so far nothing.
I hope you will understand me, because my english is not very good
That thing is one small, mail notification. Ok, you will say it exists as badge, but you have to unlock phone and look see if mail is received. SMS, and missed calls (Facebook, ...), for example comes as nice pop-up window, and I don't know why this feature don't exist for e-mail...
I saw, there are some mail client apps that has pop-up, but they support only POP and Gmail protocol, and I use my company's Exchange server with push.
Is there any app (could be from Cydia, I have no problem with jailbraking device) which enables this small but important feature?
I've written mail to Apple to include this feature in next iOS release, but so far nothing.
I hope you will understand me, because my english is not very good