I accidentally sent an email to the wrong people at work. It wasn't a particularly private/confidential email. I accidentally copied in the wrong distribution list, as it turns out that there are 2 distribution lists with the same words but written in a different order. (e.g. one is 'Project Name Company 2022' and the other is 'Company Project Name 2022'). The one I accidentally copied in (and have been copying in since I started working on the project) has the same members as the other distribution list, apart from it randomly has another department's distribution list included (I think mistakenly as I have no idea why they are including in the distribution list).
I had no idea that there were two distribution lists, or that I had been using the wrong one, or that this one had some additional members that shouldn't have been getting the emails. I obviously scanned the members of the distribution list before sending and it has all of the correct people, just an additional distribution list that I didn't notice or think anything of.
I have quite bad anxiety and am catastrophising