Preventing New Cases and Only Allowing Case Updates via Email
Some organizations want their customers to open cases via a web to case form rather than email so that specific data is collected from the onset. Email to Case Premium cannot be configured to "blackhole" any emails, for new cases or otherwise, but there are some approaches outside of Email to Case Premium that you may consider. Internet Creations does not provide support for these configurations as a part of our basic support offering, but can provide assistance via professional services. Contact firstname.lastname@example.org or your Account Executive for more information on professional services.
Consider one of the approaches detailed below. If setup properly, you could even allow certain inbound email addresses to open cases while disallowing others.