I also used crazy-legs suggestion. If I was aiming fora director or someone like that then I would tend to find a middle manager or lower on linkedin and ask for their email address to find the pattern.
Reception sometimes don’t give emails of senior management but are less wary if they are lower down the food chain. If they still resist, say can I send it to you to pass on? they sometimes fall for that.
I WAS in recruitment for a while. I am no longer in recruitment. I have paid my dues, reformed and no longer part of the selling of flesh for a quick buck. I feel I had to say this so no-one thought I was a professional stalker.