Cpanel "Mail Account Maintenance" section: mail account listing

The email accounts are listed, according to the entry in the /home/username/etc/domainName/passwd. The corresponding entry for the email account will not be present in it (/home/username/etc/domainName/passwd).

Before adding the entry, check whether the encrypted password in /home/username/etc/domainName/shadow
emailaccount:$1$UvZsG9RG$sU3foxu9NHgrtH8IrHAsn1:::::::

You need to add the entry in the /home/username/etc/domainName/passwd like: emailaccount:x:34115:34115::/home/username/mail/domainName/emailaccount:/usr/local/cpanel/bin/noshell

The entry "34115:34115" can be obtained from the :
id username

Note: Replace the username, domainName, emailaccount by the corresponding values.