I want to be able to sort out the list of my contacts between who has been opening the newsletters recently (the last 6 months or so) and who has not. Is there a simple way to do this?
Generally, you’d need to have planned ahead for this. You can actually embed a tracking link that uses automation links to raise a tag when something is opened…but it would have had to have been in there ahead of time.
There is a campaign email open report that might help you to identify your newsletter opens though