[Steven Zahm]

When you add an email address, set the Visibility option to Private. On users who are logged as Subscriber will be able to see the email address.

If you do not see the Visibility option, you might have disabled it in the settings. It can be enabled again on the Connections : Settings admin page under the Fieldset Config tab in the Email section.

By default the Subscriber role can view Private. If you have changed this, it can be changed back on the Connections : Roles admin page. Give the Subscriber role the View Private capability.

OR

You can use the Contact addon. This hides the email from display, then all site visitor can just use the contact form to email the entry. This way the email is never public.

Hope this helps!