$sock = new HTTPSocket;
$sock->connect("ssl://HOSTNAME",2222);
$sock->set_login("ADMIN|USER",TOKEN);
$sock->query('/CMD_API_EMAIL_POP', [
'action' => 'modify',
'user' => 'EMAILUSER',
'newuser' => 'EMAILUSER',
'domain' => 'DOMAIN.COM',
'quota' => '1024',
'passwd' => '',
'passwd2' => '',
]);
$result = $sock->fetch_parsed_body();