[prmoustache]

I can't speak about facebook but I am in the case of having a gmail address[1] with my first name initial followed by my last name and I am in the case of having people with same last name and first name initial using my email address to register. That box is polluted by regular confirmation emails followed by spams from the same many websites. It turns out that more often than not the confirmation email is made to protect the companies running the websites (I guess to limit bots and password that can't be reinitialized), not promotionnal mail registration. You still receive all the promotionnal and automated email regardless if the user is active. Different table in the database I guess. Also there websites/services that don't use confirmation emails as well as processes initiated through physical office/point of sale.

[1] now pretty much abandonned but I mostly keep it to avoid anyone obtaining it and impersonating me. I still need to do some housekeeping and make sure I am not registered anywhere with that address anymore.