You know what I hate, people who write emails to me an carbon copy (CC) other people in on them. Not group discussions – just emails asking me to do stuff and showing everybody else that they’ve asked. That means when I refuse to do said stuff I need to provide my rationale to a wider range of people than would otherwise be the case.
I particularly hate it when someone CC’s my manager into something as though that is a tacit endorsement from my manager of the task this individual is asking me to do. It’s not. And I won’t do it on principle. Then I have to go to my manager and say – “disregard that email, the person is a twit”, or find out that I should in fact do the task for said twit. It would be easier to just send an email to me asking if I’ll do something, or send an email to my manager asking to get me to do something. It saves us all unwanted hassle and stress.
That is all.