Just FYI, your goal is to get to the point where he no longer can get under your skin.
Read about being the friendly neighbor. Forward the emails and let him know that it is no longer your duty. Not in a nasty way, just a "matter of fact" kind of way.
M 53 W 54, M since 98 D15, D19 8/2013 discovered EA, W maintained contact with OM until 10/14 7/2/17 W said she wanted S, 7/25/17 moved out of MBR 12/17 W says moving out 5/18, W still in home.
