Shipping from your Mac Address Book
NRGship provides a small plug-in that allows you to easily generate labels directly from the Apple Address Book. Just right click over any address and choose "Prepare UPS Shipment in NRGship" and a ship record is created in the NRGship Application.
Installation
Download and copy the UPS Address Book Plug-In to ~/Library/Address Book Plug-Ins or /Library/Address Book Plug-Ins. Quit Address Book and start it again, and you're ready to start shipping.
UPS Address Book Plug-In
Requirements
Mac OS X 10.3.9 or later