Employee's of Fullstaq Marketing need to have the option to select 'Message NOT Opened' in our Smart Lists Filters. We need to be able to have the options for 'Message NOT Opened' Email Contact Segments for our 7, 10, 14, 30, 45, 60, 75, 90, 100 day email openers. The company highly relies on this function for it's email open rate reputation and CRM.