text: Since that is the only way you can follow up with him, it is not a bad idea.  It shows you are interested in the job enough to find another way to contact the interviewer.\n\nHowever, if you don't hear back from him, he may have a spam blocker on that would prevent him from receiving email at that address from those he is not expecting to email.  Or he may not have a job for you at this time.\n\nGood luck.  I know how hard it is to find work.