Ticket Tracking and Customer Management?
How do you mean tracking jobs as they arrive / leave? Barcode scanned objects on arrival or similar?
We've adapted various business practices to take advantage of RTs strengths, and pretty much most of our company uses RT to one extent or another, from IT through to sales. We've set up autoforwarders on our mail servers so that e-faxes to certain numbers arrive in particular queues, we've got cron jobs setup to send e-mails out for regular departmental tasks and so on.