I enabled email messages recently and I believe my customers appreciate the movement of their order. However, I have one repeat corporate account that orders 3-4 times a week and finds this annoying. Can I disable his account from the emails?
It may be that you are sending too many updates. Really customers just want tracking info, so we send emails for that. We used to send emails on other status changes, but we also found some customers who didn't want too many emails...
Perhaps you are sending other status emails besides the "shipped" email and it may be something you want to reconsider.