I wanted to delete all our contacts who have not opened our emails in the last two years.  I created a segmented list from all of our varied email lists.  There is no simple way to just delete them. I had to chat with support who had to walk me through a very convoluted process.  There is nothing in the knowledge base for this. You have to first create a new list with all those contacts that you want to delete. (Not at all intuitive.) Then you have to go to your email list and click on manage lists and chose all the other lists except that one. Then you can delete the contacts from those lists, and then you have to delete the new list and all the contacts in it. I suggest that the developers work out a method for choosing all the contacts on the segmented list and create a way to delete them from all the lists they came from in one step. ... View more