Try printing the email to a pdf?
I’d definitely take that document to a local lawyer (preferably one that specializes in labor cases) and ask if there’s anything there.
By chance, you aren’t in a union, are you? If so, take this to your union rep, too. You’re union will have lawyers who will deal with this sort of thing.
I know someone who did this back in college, mostly as a prank. She found a product that was made specifically to collect menstrual blood. I’m not sure what it’s called, but she described it as some sort of cup. There really wasn’t much to it. She just collected it, then painted a simple picture, then gave it to a friend as a prank gift.