I'm starting my process of converting over from a Blackberry to an iPhone 3GS

Currently have 5 email accounts that sync to the device and due to the large number of emails I receive, I have turned off the notifications for email to conserve battery life...

Have been looking for an app that will let me customize notifications by email address like on the blackberry. I found Notifier, which gives me an icon when I have an email and this helps in not putting my password every few minutes to check if I have a new email...

Is there an app in the Cydia catalog that can provide notifications if I get an email in a particular email account (say gmail ?) which I use as a pager address... ?

I know I can use SMS, but that just adds another $20/month to an already expensive monthly charge..

Appreciate your help...