SD I wasn't sure if you were asking the poster or me since you included FB in that. I'm going to answer for myself and then MT can answer. He didn't have a work email. He was an intern for an electrical company while he was in college working on his degree. He basically worked in a production type area making electrical parts, no office job. He had a yahoo account and I tried emailing that one too with the same results. I would text him (when we were still in contact) and he would answer me on the little stuff like "How's your day going?" but when I asked about their Christmas plans or anything like that, he wouldn't answer. He later told me that she also checks his phone and reads his texts along with checking all his email accounts.
So I quit texting and emailing him. If he chooses to live that way, then it's his choice but I wasn't playing those games. Now, it's been a 19 months since I have seen him in person and haven't spoken to him in 7 months (last call in December, after she kicked me off her FB and he was lying to cover for her, when I told him I loved him and would not contact him any longer. The ball was in his court.)
So in my case, all the avenues I had to contact him were being policed so I just quit.