In my previous job, I was using bugzilla. I really got used to receiving main notification each time a team member created or modified a ticket. I liked it because I could follow the progress of the projects by simply reading my email.
Going to mark this as a duplicate. [url=http://traq.rainbirdstudios.com/traq/ticket/22/]Ticket #22[/url] will pretty much do what your asking.