Lack of personal contact and an in-person interaction with potential customer is the obvious limitation of traditional e-business. Having this constraint, businesses should adopt more efficient and effective means of virtual communication using multiple channels.
Customer query ranging from order status, product inquiry, refund/exchange, availability & discounts, payment stuff, shipment tracking and more like these would require appropriate messaging and clear communication to guard against any misunderstandings. This will also have positive impact on your shopping experience and conversion too.
On the top of traditional email alerts, one should engage other mediums of communication such as phone helpline, live chat, support tickets, text alert on mobile and even WhatsApp in some regions. Staying more forthcoming and putting most kind of information in self-service manner on your site would decrease your customer support staff bandwidth.