I can't emphasize enough how useful it would be to be able to sort my contacts by their engagement rate across multiple campaigns. Knowing that certain contacts never open my messages would tell me that I need to contact them some other way (or find a new email for them in case it's an unmonitored address). And knowing at a glance who is most engaged would allow me to follow up with them more closely. The only way I currently see to do this is to go through contacts one by one and see whether they've been opening my emails, and since I've got over 10,000 contacts this really isn't a great use of time.   Thanks ... View more