How can PHP developers troubleshoot issues with sending emails to multiple recipients without revealing other recipients' information?

When sending emails to multiple recipients in PHP, developers can use the BCC (Blind Carbon Copy) field to hide the email addresses of other recipients. By adding all recipient email addresses to the BCC field, each recipient will receive the email without seeing the addresses of the other recipients. 

$to = 'recipient1@example.com, recipient2@example.com';
$subject = 'Subject of the email';
$message = 'Body of the email';

$headers = 'From: sender@example.com' . "\r\n";
$headers .= 'Bcc: recipient1@example.com, recipient2@example.com' . "\r\n";

mail($to, $subject, $message, $headers);

Keywords

PHP email multiple recipients BCC privacy

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