That's tough. I wonder if they sent the email around and someone else printed it out so you could see it.
I would contact the person directly and ask them about the email. Unless they get nasty, I don't see the need to bring it to a higher-up's attention. I would keep a copy of the printed note for evidence though.
I think they sent the email to the people in their building and the sender printed it out and put a copy by the computer as a reminder. It was taped down and highlighted in spots. Everything else in the note was normal and made sense, until they threw me under the bus. They seem to forget that we go to the buildings when they're closed to work on things.
I sent the photo to HR & she printed it out to discuss w/ their manager. Management just had training on harassment and inappropriate behavior/ bullying. Ironically, when I got back she was in a labor management meeting. I'm going to let them deal with it. Someone suggested that she may have thrown the bit about me in there to get people to listen, but if that's the case she didn't need to make me out to be a monster. It's literally their job, how hard is it to just say Hey, do your job. Plus she's not the manager.. so why not just say 'they manager say to remind you all' instead of making up that I sent those instructions. Like the one thing was ridiculous, they must always enter the email address in LOWER CASE letters. I never said that. And also made it sound like I said they need to complete the application the same day & review them weekly. IDK where any of that came from.
Years ago I was told by a brilliant Network Admin "Never say 'Shawn said'" Which I like b/c I say Shawn said "never say 'Shawn said'" b/c people will always try to put words in your mouth. So I learned to say things like From what I understand & Supposedly & In theory & Don't quote me on this.. b/c people like to embellish.