I sent a text format mail containing a couple of innocent words and a youtube link of a completely innocent clip to my wife. Gmail in their infinite wisdom clas

I sent a text format mail containing a couple of innocent words and a youtube link of a completely innocent clip to my wife. Gmail in their infinite wisdom classified it as spam. Obviously users need to be protected from watching youtube clips. I used the smtp server of my ISP. I'm know that it is tightly monitored and not the source of any significant amount of real spam.