I am thinking an act of remorse... like flowers or him fixing your car
But you can just reject them.
if he brings you flowers ->
"I don't accept gifts from cheaters." And walk away
If he goes to fix your CAR...
"I have a good mechanic I trust with my safety, please don't touch my car"
etc
Him trying is good, but you want to see hwo he handles it when you reject it.
Then if the emails DO appear to be stopping then throw him a bone and accept something... but I would be rejecting 95% of what he's offering right now...
It's only TWO DAYS... exposure and withdrawal take WEEKS.