I have over 15GB of emails. I have one employee that requires hard proof in order to understand a concern. Otherwise this person gets very defensive. I hope to avoid this by showing the insane number of tasks and emails that they never completed or replied to, even after bump and reminder emails. So they can't get defensive and we can work on a solution going forward.
So, how do I search all the emails I have sent to a specific person/email, that they did not reply back on, or they were not the last person to reply (in the sense of a chain email, they replied, I replied back, they then didn't)?