But that is not enough. Give them someting to do. Let them send you email, or post a comment. Motivate them to take action. This will reinforce your message, and keep your company at the front of their minds longer.
Email allows for immediate feedback.
This is a big plus, but feedback goes both ways. When customers respond to your webpage, with questions or comments, they expect you to get back to them right away. If you can't, they may start to wonder about what your committment is to the site, and to them. Don't just whisper about it. Tell your current clients about your webpage.