I personally would be flattered, except for the fact that all the people that work for me are men.
Send another one saying someone has hacked your e-mail and if anything arrived between two days ago and present time, it wasn't from you. LOL maybe that will work
Maybe his wife wouldn't.
Whatever, it's happened...no undoing it...so, forget about it. Capiche! You meant it light, if he doesn't get, his loss.
He'll forget about it too, plus...how often do you see him? Probably not that often.