How to send hidden emails with phpMailer?

Question

PHP

How to send hidden emails via phpmailer to many subscribers?
In a loop, an email is sent to all subscribers at once $mail->addAddress($emailTo);
But the problem is that all subscribers see other people's emails in the to field. Can you hide it somehow?

Answer 1

CC:
BCC:

Answer 2

Well, for example, iterate through the subscribers in a loop and send them individually at each iteration, but if there are a lot of them, the option seems to be not good ...

Answer 3

In order not to display all recipients, it is necessary to clear the buffer after each iteration.
foreach($to as $valueEmail){
$mail->AddAddress($valueEmail['email'], $valueEmail['first_name']);
$res = $mail->Send();
// Clear
$mail->clearAddresses();
}