title: Send multipart email (html+plaintext) in Dynamics CRM 2011?
body: <p>I'm sending out e-mails in Dynamics CRM 2011 UR13 using my plugin with the following code;</p>
  
  <pre><code>// Create the e-mail message
  Email email = new Email
  {
      To = new ActivityParty[] { toParty },
      From = new ActivityParty[] { fromParty },
      RegardingObjectId = new EntityReference(new_la.EntityLogicalName, la.Id),
      Subject = emailsubject,
      Description = emailbody, // html-content
      DirectionCode = true
  };
  var _emailId = service.Create(email);
  
  // Send the e-mail message
  SendEmailRequest sendEmailreq = new SendEmailRequest
  {
      EmailId = _emailId,
      TrackingToken = "",
      IssueSend = true
  };
  </code></pre>
  
  <p>The e-mail is being sent to the reciptient, however, the receiving mailservers spamfilter is not happy because the content is html only.</p>
  
  <pre><code>X-Spam-Report:  
    *  1.6 HTML_IMAGE_ONLY_24 BODY: HTML: images with 2000-2400 bytes of words
    *  0.0 HTML_MESSAGE BODY: HTML included in message
    *  0.7 MIME_HTML_ONLY BODY: Message only has text/html MIME parts
    *  0.4 HTML_MIME_NO_HTML_TAG HTML-only message, but there is no HTML tag
  </code></pre>
  
  <p>I want to minimize the risk of the e-mails being stuck in our customers mailfilters. Ideally the e-mail should be sent as multipart, i.e. both a text/plain and a text/html part, but I cannot figure out how define the plain text part separately.</p>
  
  <p>So the question is - it there any way to specify one html-part and one plain text-part of the e-mail body?</p>