When you have a Paid or Permanent Account, you have a @livejournal.com email address, where people can send mail: email@example.com
The @livejournal.com email address is not an actual email service where you can send email. It is only a forwarding service, also known as an email alias, that sends mail to you. Any mail sent to your firstname.lastname@example.org address will be forwarded to the email address you listed on your Edit Profile
page. There is no additional mailbox to check, no POP3 server, and no extra hassle of setting up another email account.
As an additional security measure, you can determine who sees your email addresses on your User Info
page. On the Edit Profile
page, look for the option labelled "Who can view your contact info?", and select your desired privacy settings.
You can completely disable your @livejournal email alias, while still receiving comment notifications and other emails from LiveJournal, by executing the following Admin Console
set no_mail_alias 1
You can enable your @livejournal email alias by executing the following command:
set no_mail_alias 0