I'm using wp_mail() to send e-mail from our website. However, we would like to include a .gif file on the body of our message. Here's my code, but it's not working.
$to = $contact['Email'];
$from = 'test@test.com';
// To send HTML mail, the Content-type header must be set
$headers = 'MIME-Version: 1.0' . "\r\n";
$headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";
// Create email headers
$headers .= 'From: Testing Mail <'.$from .'>'. "\r\n";
$subject = "Subject Text";
$customer_name = $contact['FirstName'];
$message = '<html><body>';
$message .="<p>message!</p>";
$message .= "<p>message </p>";
$message .= "<img src='img/signature.gif'>";
$message .= '</body></html>';
wp_mail($to, $subject, $message, $headers);