How to include inline images in email using MailApp
<p>I have a simple MailApp to send text in HTML format. The small question I have is: How do I insert inline images in that text? For example, I want to add a Dutch flag for the Dutch text, and a French flag for the French content.</p>

<p>I assumed just using HTML code would do the job. But alas, no such luck. It's just a tiny image I need, no big images below the content. How can I accomplish this?</p>

<pre class="lang-js prettyprint-override"><code>MailApp.sendEmail(mailaddress, subject, "" ,
              { htmlBody: bodyNL + bodyFR })
</code></pre>