The most hilarious/sad was the insurance provider domcura which advertised how they got some kind of award for their great processes, yet writing to 2 or 3 different service emails that they are sending me confidential documents resulted in nothing until I wrote to their data protection officer.
https://en.wikipedia.org/wiki/List_of_the_most_common_surnam...
Curiously, for a supposedly common name I have never once met a John Smith.
In Italy - for the record - it would probably be Mario Rossi (as an example on a mockup form), but conversionally it would be Pinco Pallino.
There are a few dedicated English wikipedia pages:
https://en.wikipedia.org/wiki/Placeholder_name
https://en.wikipedia.org/wiki/List_of_terms_referring_to_an_...
https://en.wikipedia.org/wiki/List_of_placeholder_names_by_l...
it is interesting to see the slighty different use in the various languages.
It was a recipt for a medical purchase, at first I thought I was getting scammed. What tipped me off was the email was sent to firstnamelastname@gmail.com and NOT firstname.lastname@gmail.com. That was the day I realized google would even do that.
I ended up using the phone number in the email to contact the person and forwarded the email. And yes, they had my first and last name :)
He got a congratulations email on a bmw purchase one time. Had a good discussion about cars, we are both gear heads.
From those emails, it's nice seeing how people support each other and apparently I'm in demand giving scripture classes.
But my e-mail address has been used by real people to subscribe to services in Sweeden, Turkey and somewhere South America. At least language helps to sort things.
Dots don't matter in Gmail, so these email addresses are the same:
bonus point for checking the activity to see if it looks human or if it's taken over by a bot.