What industry? It's good practice to not share information like that in any context, since attackers that have a bank if email addresses that are trying to figu

What industry? It's good practice to not share information like that in any context, since attackers that have a bank if email addresses that are trying to figure out which if a few reused passwords might be used for a given website would have a harder time if they dont even know if the email has an account with a given website, or if an alternate email is used instead etc.