Is there anyway that we are able to ship in bulk? For example, can I send over all of my orders to stamps.com to print out labels all at once instead having to manually type each address? If not, do we have a way that we can export addresses in bulk to Excel so that we can from there export to stamps.com?
This depends on the shopping platform you're working with. Both E-Commercetemplates.com and WooCommerce have addons that help with this.
In the WooCommerce arena check out Codecanyon.net as well as the Woothemes.com page. I've found a ton of great resources at Codecanyon
I called stamps.com a couple of weeks ago and they said that they would actually set up the api for me if I joined. I would try to call the stamps.com folks and see if they will do it for you.