Include html file in body email with email-ext plugin in jenkins pipeline
<p>I need include email content from html file using email-ext plugin in jenkins pipeline (my jenkins is 2.24 version), i try this</p>

<pre><code>emailext (
  subject: "some subject",
  body: "${FILE,path="enteryPath/template.html"}",
  to: "email@example.com"
)  
</code></pre>

<p>but dont work for me :( any suggestions or solution?? , thanks advance.</p>