Clearly, you had no way of knowing exactly how this sister's husband would react to another man sending his wife emails, did you? The good thing is that you are alive, and he didn't just get out of Folsom State Prison here in California, having acquired clever ways after serving 20 years or so there to discard the bodies of men that he feels do not give to him the respect that he deserves.
JW's are DEFINITELY not drama queens. Nope, not even a little.