title: mu4e with org-mode: LaTeX and R in emails
body: <p>I'm trying to reproduce this awesome email from <a href="http://www.brool.com/index.php/using-mu4e" rel="nofollow">this blog post</a> for the fun of it. Emacs, mu4e, org-mode Rich-text HTML email.</p>
  
  <p>He sends an email from Emacs with mu4e, with LaTeX formulas and R plots, relying on org-mode to export the message to HTML and shell out rendering the images.</p>
  
  <p>The org-mode HTML conversion works, if I have the cursor in the header and press <code>C-c C-c</code>, it converts the org format and sends a HTML message.</p>
  
  <p>But when I try to include the LaTeX formulas, the rendered LaTeX .png fragments are removed before mu4e sends the email, and so aborts saying:</p>
  
  <pre><code>mm-insert-file-contents: Opening input file: no such file or directory, /tmp/ltxpng/...png
  </code></pre>
  
  <p>How can I delay removing the temporary files, until mu4e finishes sending the email?</p>