What is a winery’s best method for shipping wine to 1,000 different customers across the USA?

What is the best way for a winery in Napa Valley, California to ship out thousands of orders of wine to customers all across the USA? The orders are either a single bottle, 3 bottles, 6 bottles, and a case (12 bottles). The winery has all permits for intrastate sales so government regulations need not be discussed in your answer. Interested in learning about shipping providers, shipping fulfillment partners, and any sample or estimate prices you would have. Thank you