Untitled

$body1[]='<img src="https://upload.wikimedia.org/wikipedia/commons/c/c4/PM5544_with_non-PAL_signals.png"/>';
$params = array(
  'body' => $body1,
  'subject' => 'This is a subject',
 );
drupal_mail('custom_request_price_form', 'HTML', $valid_email, 'en', $params))

function custom_request_price_form_mail($key, &$message, $params) {
  $headers = array(
   'MIME-Version' => '1.0',
   'Content-Type' => 'text/html; charset=UTF-8; format=flowed; delsp=yes',
   'Content-Transfer-Encoding' => '8Bit',
   'X-Mailer' => 'Drupal'
  );
 foreach ($headers as $key => $value) {
   $message['headers'][$key] = $value;
 }
 $message['subject'] = $params['subject'];
 $message['body'] = $params['body'];
}

<html><head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
  </head>
<body id="mimemail-body" class="custom-request-price-form-HTML">
<div id="center">
 <div id="main">
 <img src="http://54.184.229.31/mtg/5c87cc0de916394fcab7d7fab1947593/1467235900/r/eNortkrNSy6qLChJTdEtScoz0ksvLkksyUzWS87P1c_MTUxPLbYvtAXKWDn6pVi6JwdZpJsEOEd6GhUXO4YFeOd45TpbFpqExGdbmAS4mlf5exQ6hpfmlAS7JOk6JQVXmkameeuaBhh4GqYBANWgI9M/aafa4d0a50efcff14152360865bca40f">
 </div>
</div>
</body>
</html>