Safari Books Online is a digital library providing on-demand subscription access to thousands of learning resources.
From our experience, if clients are not responsive, their projects are behind schedule.
E-mails are an example. Responsive clients answer your e-mails quickly. They are probably the same clients that are easy to work with because they are comfortable making decisions.
By contrast, unresponsive clients do not make decisions, reply to your e-mails, answer your questions, or offer feedback. So, how can we persuade these clients to respond on their own initiative?
You cannot. There just is not a way to do this. That is where proactive project management comes in. Proactive management forces the client to decide. You tell the client you have evaluated an option and state very clearly that you will proceed with your option unless you hear back otherwise from him by a set deadline.