use both email and Username php code example
Example: create an email addresses php
//Using Cpanel from StackOverflow
$socket = fsockopen($cpdomain,2082);
$cuser = "YourUserName";
$cpassword = "YourPassword";
$authstr = base64_encode("".$cpuser.":".$cppass."");
$in = "GET /frontend/$cpskin/mail/doaddpop.html?email=$euser&$edomain&password=$epass"a=$equota
HTTP/1.0\r\nAuthorization: Basic $authstr \r\n";
fputs($socket,$in);
fclose( $socket );