title: Is it OK to HTTP redirect images used in email clients?
body: <p>I have seen the answers to <a href="https://stackoverflow.com/questions/3778347/is-it-ok-to-http-redirect-images">Is it OK to HTTP redirect images</a>. It is a YES - browsers would follow redirection.</p>
  
  <p>However, do email clients (GMail, Express, Thunderbird, Yahoo...) follow the same rule?</p>