BillSeitz says:
There's already a generic launcher that alerts you to having unread email.

http://www.software-for-blackberry.com/launcher.html

Do you not like reading your installments through email?

Another approach is install one of the free RSS reader applications. NewsGator is popular on many platforms, but there are many other Blackberry-specific options.
http://www.newsgator.com/Individuals/NewsGatorGo/Default.aspx
http://allrss.com/rssreadersblackberry.html

Or is there something else driving your interest?