"Reply to all"
I'm involved in a project at work. We've set up a new service which is similar to the ones we already run, but more specialised. The people who are involved have been involved on varying degrees and therefore when I'm sending an email, I'll pick out people to whom the email is relevant. For instance, if it's about the overall management, I'll include the managers, if it's about something clinical, I'll include the nurses, if it's about something related to the field we work in, I'll include certain people, but not everyone.
None of my colleagues seem to understand the concept of "Reply" and "Reply to all" though. I open up my emails every day and have loads of emails, most of which are single word responses to one person, which have been copied to about 15 people. I've just been forwarded months of emails with profuse apologies for not including me, in something else I've not ever been involved with, nor do I care about. The person who did this also sent an email asking everyone to please include me in ALL email correspondence in the future.
What's the best way to approach this with my colleagues, particularly the person who's just told everyone to include me? I've made it clear I'm not interested/don't have the time to get involved in this other project. I don't know why it seems to offend me so much that they do this, but it does.