If checking your email throughout the day isn't ideal, consider blocking a chunk of time on your calendar each day to respond to email messages. Even if you don't know the answer or need to find additional information, you should acknowledge the email and let the sender know you are working on it. If you plan to be away from the office, remember to use an auto-responder. Include information such as how long you will be away and when you will return messages. Also provide your contact info or an alternate contact for those who need an immediate response.
If you're looking for an even faster way for your customer support team to answer questions and interact with online shoppers, you may want to consider a live chat support service. Visitors who receive quick answers and responses are more likely to stay longer and buy more products. The personalized interaction will also help them develop more confidence in your business.
The speed in which you respond can easily affect a potential buyer's perception of you and your business. Always remember that the sender emailed you for a reason and is expecting your prompt response. Don't give them time to find the answer, or a faster response, elsewhere.