I think I'm fairly clean and direct in my emails, but that doesn't mean you can't pay attention to how your communication comes off. A friendly opening, ("Hey

I think I'm fairly clean and direct in my emails, but that doesn't mean you can't pay attention to how your communication comes off. A friendly opening, ("Hey bob"), and closing ("Cheers, {initials}") should be sufficient to make you not sound like a monster. Maybe throw in a smily face once in a while to remind them you're human.