Thank you for reaching out with your question! Unfortunately, we currently do not have the ability to sort contacts by engagement record. If you click on a contact, and get to the contact details page, you can view the engagement history there.
The cumulative open report is currently a hotly requested feature that we are actively researching. I would be happy to let our engineers know you'd like this option!
I'd like to second this request and add a request for the ability to search by date of last engagement. Poring over more than 4000 individual records to find the folks no longer reading our emails is nearly impossible. Having a report to identify people who haven't opened an email in a while would be excellent. Thanks.
Welcome to the Community! Thank you very much for the valuable feedback! I will pass along your request to our developers as well. I see how this could be a huge time saver for you while sorting through your Contacts! Please let us know if we can be of further assistance.