Do you want Sent date? You can use that in the Was Sent filter or in RCE or Email Perf Report.
If you want most recent campaign responded to, you can do that as a field and use Change Data Value when someone responds.
Yes, I want to confirm, and extract overall sent dates for emails. I haven't seen Sent date in the email performance reports we've been getting, but I'll look into your solution further. We don't have the RCE module.