/**
* Toggles clicks tracking on a per-message basis.
* This setting has a higher priority than the domain-level setting.
* Pass `true`, `false` or 'html' or 'htmlonly'.
*
* @param bool|string $value
*
* @return \Bogardo\Mailgun\Mail\Message
*/
public function trackClicks($value)
{
$value = $value === 'htmlonly' ? 'html' : $value;
$this->messageBuilder->setClickTracking($value);
return $this;
}