As this would indicate that you are not licensed for Protection Center, you are welcome to order Protection Center on our website at:http://www.incredimail.com/en/products/protectioncenter
Alternatively, if you wish to only receive messages from approved contacts in your Inbox, simply click on Tools > Message Rules, and add the following message rule:
If - Received from unapproved sender
then - Move it to - <Appropriate Folder>
Note: You may need to create a new folder for the above rule (e.g. Unapproved).