Hi,
In Email Marketing you can resend a mail to "unresponsive recipients". We have some customers that would like the ability to send out a new newsletter to "responsive recipients" from an older newsletter. They wan't to use this to follow up on customers who has already shown interest in something by opening or clicking a link in an older newsletter. I don't believe this is possible in an easy way for the user right now. I could do it by exporting the recipients, filtering them by "opened" or "clicked", change the column names and add some column names so I'll be able to import the users to a new category of subscribers.