Salesforce's native Mass Mail allows sending a Mass Mail to Campaign Members based on the Campaign and Member Status. When creating a View, the criteria can be added. This allows sending consecutive or follow up emails to Campaign Members based on previous responses (or non-responses, or any Campaign Member Status). I love Mansa's MassMailer - it's a great app. But please keep all the native features of MassMail and only add to them. I don't want to have to choose between MassMailer's feature and the native features. I'd like to choose between the native features only, or the native features plus much more.