It is pretty simple. Leave the images on the server and send the PHP + CSS to them…
$to = '[email protected]';
$subject="Website Change Request";
$headers = "From: " . strip_tags($_POST['req-email']) . "\r\n";
$headers .= "Reply-To: " . strip_tags($_POST['req-email']) . "\r\n";
$headers .= "CC: [email protected]\r\n";
$headers .= "MIME-Version: 1.0\r\n";
$headers .= "Content-Type: text/html; charset=UTF-8\r\n";
$message="<p><strong>This is strong text</strong> while this is not.</p>";
mail($to, $subject, $message, $headers);
It is this line that tells the mailer and the recipient that the email contains (hopefully) well-formed HTML that it will need to interpret:
$headers .= "Content-Type: text/html; charset=UTF-8\r\n";
Here is the link I got the information from… (link)
You will need security though…