How would you respond to a rude email from a colleague?
Said colleague has basically implied I'm thick, and haven't tried everything I actually have tried to solve the problem arising.
It just got my back up. There was no need for his tone.
I thought about replying "Thank you for your input" but not sure if that adequately conveys I think he's a cunt. I could ignore his email but that also lets him know that he can speak to me like that.
I'm just pissed off. What can I say or do?