使用SMTP发送邮件时使用Cc和Bcc的问题 - PHP

Question

I'm sending email from my php page using SMTP. everything works perfect except Bcc.

This is how I got my email, Interestingly I can see bcc as well.

Whats wrong in my code, can anyone please help.

$Headers = array("MIME-Version"=> '1.0', 
"Content-type" => "text/html; charset=iso-8859-1",
"From" => $From,
"To" => $To, 
"Bcc" => $User_copy,
"Reply-To" => $From,
"Subject" => $Subject);

$SMTP = Mail::factory('smtp', array ('host' => $Host, 'auth' => true, 'username' => $Username, 'password' => $Password)); 
$mail = $SMTP->send($To, $Headers, $Message);