Need Help with Shipping Solution for Small Business

I own a small (but growing) retail brand. I recently set up a call center inside my facility and hired several telephone salespeople who call shops all day to pitch our products. (Thanks to the baws on the OT Lounge for recommendations on VOIP providers.) Our orders are starting to pick up and my poor shipping guy is getting crushed.

Our shipping process is really time-consuming right now....salespeople email him the orders at the end of the day, he packs the order up for shipment, hand writes the customer's address info on package, etc., then carries 20 boxes to post office and has to punch information all over again thru the self service kiosk. Needless to say, due to how much time this is taking (and the pissed off post office employees), this isn't working anymore.

My sales guys are using Zoho for their CRM solution. Is there a particular shipping solution anyone can recommend that integrates with Zoho CRM (besides Ship Station)? Ideally, I would like the sales people to input the information into CRM and process the order, and then an invoice gets generated and prints on a standalone printer in my shipping area, where the shipping guy can pick up the invoice and shipping labels from the printer, pack the order, slap the printed shipping labels onto the package, and send them out for shipment. (He can still bring them to post office every day, but I want him just dropping them off in the bin, not standing in line for help with shipping labels, etc.) I know it's probably not reasonable to think I can fully automate this, but I would like to streamline the process as much as possible.

Also, I'm looking for something besides ShipStation, which doesn't seem to integrate well with Zoho CRM.

Any help/recommendations/guidance would be greatly appreciated!