QB and USPS

I need to find a module/add-on/third party software that allows full (or as close as I can get) integration into Quickbooks Pro (especially attributes) and USPS Postage Label Printing. I would also like this to send emails out to my customers with order status and a tracking number. There is so much info out here in the forums that I am getting nowhere. Can someone help suggest what I need for my current goals?

Integration of labeling/USPS at ENDICA is a paid service
But if you require it

http://www.zen-cart.com/index.php?main_page=product_contrib_info&products_id=223

Cool- what are some other alternatives and what are other ZC users doing instead of Endicia? I definitley want to print labels and pay for postage from my business so I just have to drop off the packages at USPS. Most importantly, I need to provide my customers with Shipping info and tracking numbers.

Quick question Kobra - I am a little confused about shipping as far as what application I will be doing this in. Should I be printing shipping labels from Endicia.com, Dazzle, or (ex.) Zen Cart Order Manager?

Lastly, can you recommend any mods that allow for QB to ZC 2way synchronization?

Thanks for your help!!!

Quick question Kobra - I am a little confused about shipping as far as what application I will be doing this in. Should I be printing shipping labels from Endicia.com, Dazzle, or (ex.) Zen Cart Order Manager?
While I have not used this it is my understanding that the features have been integrated into the ZenCart admin and this is where you manage things
Lastly, can you recommend any mods that allow for QB to ZC 2way synchronization?
The only ones that I have seen export ZenCart Data and not the other way around. Activity happens in ZenCart and not in QB
QB is only the bookeeping side

Are you able to get data from Zen-Cart into QuickBooks? If so, Stamps.com has a plug-in that allows you to print USPS postage from inside QuickBooks. Once you download the plug-in and connect your accounts, you'll be able to print postage from QuickBooks directly on envelopes or labels.

The plug-in adds an option of "Print Postage with Stamps.com" under the File menu. Simply open the invoice (or other transaction) in QuickBooks and click on “Print Postage with Stamps.com.” The Stamps.com window will open up with the address automatically imported from QuickBooks. You can select from different types of mail classes, compare rates, and see the estimated delivery dates.

Get more info at:
https://www.stamps.com/plug-in/quickbooks/

You can download the Stamps.com plug-in for QuickBooks at:
https://secureupload.stamps.com/quickbooks/

Special Note: The plug-in is 99.9% complete but is still in beta. If you encounter any problems, please alert support so we can fix them right away.