I have paid for the lowest level of WordPress account. I have several email addresses but currently only one active website, jansmatter.com.
I wanted the emails from comments, followers to go to the firstname.lastname@example.org corresponding email account, but the only way I could find to specify that was to actually change the email on my WordPress account itself.
WARNING. I NOW HAVE TO LOGIN TO email@example.com, to access my WordPress account. I suspect I would have to upgrade to a higher level of WordPress or buy email support through WordPress to maintain separate emails for each web site I create? Maybe I’m wrong about that but if there is another way I have not found it.