How can you extract the "reply_to" address from an email using PHP's imap functions?

To extract the "reply_to" address from an email using PHP's imap functions, you can use the imap_headerinfo() function to get the email headers, and then access the "reply_to" field from the returned object. 

$mailbox = imap_open("{your_mail_server:993/imap/ssl}INBOX", "username", "password");
$emails = imap_search($mailbox, 'ALL');

foreach ($emails as $email_number) {
    $header = imap_headerinfo($mailbox, $email_number);
    $reply_to = $header->reply_toaddress;
    
    echo "Reply To: " . $reply_to . "\n";
}

imap_close($mailbox);

Keywords

PHP imap functions email reply_to address extraction

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