I used to have microsoft@<isp> as an email address, and would occasionally get complaints about blue screens or other Windows related issues. People did not know how email worked in that time.
I really enjoyed reading those actually.
Some are funny, but it shows how 'trusting' some people are. It seems like mailing is a kind of harmless game (they actually shared addresses with strangers).
I hope/think most people are more cautious nowadays :)
[0] https://milk.com/experiments/