For your products to get to your customers, you have to have a home delivery system. You can either procure the services of one home mailing service business or include one in your business services (this is a good thing if you have the resources and finances to back it up).

Granted, your customers will be very impressed with the efficiency of your service, and will show to them that not only is the profit important to you but retaining your customers as well. If you plan to get the services of a home mailing service business, do get one that has a company website on the internet. This might seem trite to others but for you, it is essential in the functioning of your business. 

You see, if the mailing service you hired has an online website that you can freely access, not only you but also your customer can check up and track the status of the package anytime they so chooses; likewise, your customer (the one who ordered the products) can directly inquire from the courier any concerns with the delivery.

There is no more need to direct the queries to you since the goods have already left your care and is under the care of the shipping company now. Unless of course some serious problems have arisen, then it is definitely a must for your business to assist the customer now.