PHP Pear Email Text Encoding not being excepted

Question

How do I correctly set the text encoding for a multi-part email using Pear ?

I've looked at many examples and I believe I am setting it correctly. However, When sending emails they are arriving with charset=ISO-8859-1 even though I specify UTF-8 .

This problem began when I decided to send a multi-part email with both text and HTML parts. I have tried setting a content type but it does not appear to make a difference.

Below is the code I am using. Any suggestions appreciated.

function send_html_email($to, $from, $subject, $html, $plainTxt ) {
    require_once "Mail.php";
    require_once "Mail/mime.php";    

    $host = "ssl://secure.xxx.com";
    $port = "xxx";
    $username = "xxx";
    $password = "xxx";

    $headers = array (
    'charset' => 'UTF-8',
    'From' => $from,
            'To' => $to,
            'Subject' => $subject,
        'MIME-Version' => "1.0"
             );  

    $crlf = "\n";
            $mime = new Mail_mime($crlf);

    $mime->setHTMLBody($html); 
    $mime->setTXTBody($plainTxt); 
            $body = $mime->get();
            $headers = $mime->headers($headers);

            $smtp = Mail::factory('smtp', array ('host' => $host,
    'port' => $port,
    'auth' => true,
    'username' => $username,
    'password' => $password)); 

            $mail = $smtp->send($to, $headers, $body);
}

Answer 1

Try headers like such:

$headers['Content-Type'] = "text/plain; charset=\"UTF-8\"";
$headers['Content-Transfer-Encoding'] = "8bit";

Reference: http://pear.php.net/manual/en/package.mail.mail.factory.php#13207

As a side note, Pear is "a framework and distribution system for reusable PHP components". The Mail component is just one of the many available through Pear.