I've moved the thread to the E-Mail section. I'm not sure what you mean but there are two kinds of email addresses in DirectAdmin:
1) the email address you get when you create the site. That's the same as the login name for the site.
You can't delete that without deleting the site user (and with it the site), and you can't change it.
You can change the password, and you can forward the email heading there to somewhere else with a forwarder. If you set up a forwarder, email will no longer go to the mailbox.
You log into these using <username> as the username.
2) the email addresses set up after you log in as the site user.
These can be deleted, and you can change the password. However you cannot change the email name.
Creating a forwarder for these does not keep email from going to the mailbox (if any); if you have both a mailbox and a forwarder with the same name, email will go to both.
You log into these with <
[email protected]>.
Jeff